Why do daughter cells produced from meiosis have greater variation between them than
those produced from mitosis? *
(1 Point)
A. In mitosis, the daughter cells have a random half of the chromosomes from the parent cell
B. In mitosis, the daughter cells have twice as many chromosomes as the parent cell.
C. In meiosis, the daughter cells have twice as many chromosomes as the parent cell.
D. In meiosis, the daughter cells have a random half of the chromosomes from the parent cell
Answers
Answer:
D.) In meiosis, the daughter cells have a random half of the chromosones from the parent cell.
Explanation:
In mitosis, the daughter cells have the same number of chromosomes as the parent cell, while in meiosis, the daughter cells have half the number of chromosomes as the parent. The daughter cells produced by mitosis are identical, whereas the daughter cells produced by meiosis are different because crossing over has occurred.
Related Questions
Please read this queation and help me to underrestand very well.
Please don't send me other expert's explanations.
in the case of double strand breaks, describe process repair for
this damage?
Answers
In the case of double-strand breaks, the process of repair for this damage is called Homologous Recombination (HR).
HR is a mechanism of DNA repair by which two DNA molecules exchange information, producing new recombinant DNA molecules that are not present in either the original or parental molecule. Homologous recombination repairs double-stranded DNA breaks, allowing the broken strand to rejoin the intact, homologous region of another chromosome or the sister chromatid. Homologous recombination involves the use of a template from a homologous chromosome to repair a breakage in the DNA.
It includes the resection of 5′ ends, strand invasion, and heteroduplex DNA formation, DNA synthesis, and resolution. The recombinational repair of DSBs can also bring about genome rearrangements, such as translocations, deletions, and inversions, in addition to restoration of the original structure. So, Homologous recombination plays a key role in maintaining genome stability by repairing double-stranded DNA breaks.
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How are biodiversity and the cycling of matter
related to maintaining ecosystem services
Answers
Answer: biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.
Biodiversity and the cycling of matter are related to maintaining ecosystem services because they ensure the functioning and stability of ecosystems, which provide important benefits such as air and water purification, pollination, and climate regulation.
What is biodiversity?Biodiversity refers to the variety of life in an ecosystem, including the variety of species, genetic diversity within species, and the diversity of ecosystems and landscapes.
Biodiversity is essential for the functioning and stability of ecosystems and provides important ecosystem services such as pollination, soil formation and fertility, climate regulation, and disease control. Biodiversity also helps to maintain resilience in the face of environmental change and provides food, fiber, fuel, and medicinal resources for humans. The loss of biodiversity due to human activities is a major environmental concern, and conservation efforts aim to protect and preserve biodiversity for the benefit of current and future generations.
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Which kingdoms contain organisms that have cell walls?
Answers
The function of cell wall is to provide protection. The kingdoms which have cell walls are fungi and plantae.
What is the function of cell wall ?The cell wall provides the protection against the mechanical stress and the pressure that a cell membrane can not handle.
Cell wall is majorly present for the purpose of protection to the species and these species tend to be delicate and tend to be in more danger.
Cell wall of fungi is made up of chitin and it is polysaccharide having the amino glycosidic linkages.
Cell wall of plants is made up of polysaccharides as well where the cellulose is present in chains.
Cellulose provides the tensile strength and this amino glycosidic linkages tend to provide strong skeletal structures in order to provide protection to the specimen.
Therefore only plantae and fungi have the cell walls.
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Scientific researchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were much smaller. It became the general view that viruses were biologically "alive." This perception changed in 1935 when the tobacco mosaic virus was crystallized and scientists demonstrated that the particles lacked any mechanisms necessary for metabolic function. It was determined that viruses consisted of a nucleic acid, DNA or RNA, surrounded by a protein shell. Viruses exist in two distinct states. When not in contact with a host cell, the virus remains entirely dormant. During this time there are no biological activities occurring and the virus is nothing more than a static organic particle. Viruses can remain like this for extended periods of time, waiting to come into contact with the appropriate host. When the virus comes into contact with a host, it becomes active, reacts to its environment and/or host and directs its efforts toward self-replication. The viral goal now is to produce more viruses to attack host cells.
The characteristics of life: many are listed in the passage describing viruses. One important piece of evidence arguing against life for viruses is implied by the passage; not stated directly. Viruses are not living, because, as implied by the passage, they
A. Lack a nucleus
B. Have no DNA
C. Are not cellular
D. Do not reproduce
Answers
According to the given passage, viruses are not living because they (C) do not have a cellular organization.
Viruses lack a cellular organization which is a basic feature of all living organisms. A virus is a nucleoprotein, with the genetic material enclosed by a protein coat. The genetic material could be either DNA or RNA. The genetic material is responsible for causing infection in the host.
Viruses are inactive outside their specific host cell. They are non-cellular organisms. They possess an inert crystalline structure outside the living host cell. The protein coat of a virus, i.e. capsid, serves as a protective covering for the genetic material.
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what type of nt receptor is used in skeletal muscles motor end plate
Answers
The type of neurotransmitter (NT) receptor used in skeletal muscles at the motor end plate is the nicotinic acetylcholine receptor (nAChR).
This receptor is responsible for receiving acetylcholine, the primary neurotransmitter involved in muscle contraction, and facilitating communication between motor neurons and skeletal muscle fibers.
Nicotinic acetylcholine receptors (nAChRs) are ligand-gated ion channels that can be classified into two groups: neuronal receptors, which are found throughout the peripheral and central nervous system and are involved in fast synaptic transmission, and muscle receptors, which are found at the skeletal neuromuscular junction and mediate neuromuscular transmission. nAChRs are composed of combinations of different subunits and are pentameric structures. Alpha2-alpha10 and beta2-beta4 are two of the twelve neuronal nAChR subunits that have been identified; they are differently expressed across the nervous system and come together to produce nAChRs with a variety of physiological and pharmacological characteristics.
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Compare the Illustration View and the Chart View of carbon flows into and out of the
atmosphere. Why is it helpful to see two different models to explain the same situation?
Answers
Answer:
Many younger students think of models as either toys or simple copies of reality. This is broadly consistent with the everyday meaning of ‘model’ (e.g. ‘model cars’, ‘model airplanes’, ‘model railways’). Students often think of models as useful because they are copies (or even scale reproductions) of actual objects or actions. In such cases, students rarely look beyond the surface similarities between the model and the object or idea being represented by the model (that is, the question, 'Does it look like X?' will be the way the value of a model of X is judged).
As with many areas of science, the science meaning for the term ‘model’ differs from the everyday usage of the word. This is important in understanding student everyday experiences with models.
The Illustration View and Chart View depict carbon flows in and out of the atmosphere. The former uses visual representation, while the latter employs data-driven graphs. Both offer distinct insights into complex scenarios.
With the use of pictures and diagrams, the Illustration View presents carbon flows, demystifying complex ideas for a larger audience. The Chart View, on the other hand, makes use of graphs and numerical data to give a thorough, accurate picture of the flows. By accommodating various learning styles, having two models improves comprehension.
Additionally, various viewpoints help to create a thorough understanding of complicated systems like carbon cycles. This two-pronged strategy helps teachers, researchers, and students explain, analyze, and comprehend the complex dynamics of carbon exchanges with the environment.
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How does cell division benefit the human body? Check all that apply.
Answers
Answer:
The applications are:
Explanation:
1;To increase the number of cells in the body
2;To ensure that human being have the same number of chromosomes in each generation through meiosis
3;To ensure growing h and development in human body since it increases the number of cells in the body
A patient has damage to alpha motor neurons. Which of the following would you expect?Decreased contraction of smooth muscle fibersDecreased contraction of extrafusal muscle fibersIncreased heart rateIncreased muscle tone
Answers
A patient has damage to alpha motor neurons, we would expect a decreased contraction of extrafusal muscle fibers. Option B
Alpha motor neurons are responsible for innervating the extrafusal muscle fibers, which are the main contractile fibers of skeletal muscles. These fibers generate force and are involved in voluntary movements.
When an alpha motor neuron is damaged or compromised, the motor signals from the central nervous system cannot reach the muscle fibers effectively.
As a result, there is a decreased recruitment of extrafusal muscle fibers, leading to weakened or diminished muscle contractions. This condition is known as muscle weakness or hypotonia.
It's important to note that alpha motor neurons are not involved in the control of smooth muscle fibers, which are found in organs such as the digestive system, blood vessels, and respiratory system.
Therefore, the contraction of smooth muscles would not be directly affected by damage to alpha motor neurons.
Similarly, damage to alpha motor neurons would not have a direct impact on heart rate. Heart rate regulation is primarily controlled by the autonomic nervous system, specifically the parasympathetic and sympathetic divisions, rather than the somatic motor neurons that innervate skeletal muscles.
Furthermore, while increased muscle tone, also known as hypertonia, can occur in certain neurological conditions, such as spasticity, damage to alpha motor neurons would not be a direct cause of increased muscle tone.
In summary, the expected outcome of damage to alpha motor neurons would be a decreased contraction of extrafusal muscle fibers, leading to muscle weakness or hypotonia.
Other factors such as smooth muscle contraction, heart rate, and muscle tone would not be directly affected by this specific type of motor neuron damage. So Option B is correct.
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Cell membranes made up of phospholipid bilayers are typically 8.40 nm in thickness and they are semi-permeable, allowing ions and charged proteins to transgress the cell boundary. Equal, opposite charge densities build up on either side of the cell membrane. This charge gradient forms an electrical barrier, preventing charged items and ions passing through the cell. For the purposes of this example, the cell membrane can be moded as a parallel plate capacitor. Owing to the presence of proteins and organic material embedded within the phospholipid bilayer, the membrane has a dielectric constant of 8.90. Determine the capacitance per unit area of this cell wall. Tolerance =5%, units mark =15%
Answers
The capacitance per unit area of this cell wall is 9.16 × 10⁻³ F/m² times the area (A) of the cell wall.
In order to determine the capacitance per unit area of the cell wall, we can use the formula for the capacitance of a parallel plate capacitor:
C = ε₀ * εᵣ * A / d
Where:
C is the capacitance,
ε₀ is the permittivity of free space (approximately 8.854 × 10⁻¹² F/m),
εᵣ is the relative permittivity or dielectric constant of the cell membrane (given as 8.90),
A is the area of the cell wall, and
d is the thickness of the cell membrane.
Given:
ε₀ = 8.854 × 10⁻¹² F/m,
εᵣ = 8.90,
d = 8.40 nm.
First, we need to convert the thickness of the cell membrane from nanometers to meters. Since 1 nm = 1 × 10⁻⁹ m, the thickness in meters is:
d = 8.40 nm * (1 × 10⁻⁹ m / 1 nm) = 8.40 × 10⁻⁹ m.
Now we can calculate the capacitance per unit area:
C = (8.854 × 10⁻¹² F/m) * (8.90) * A / (8.40 × 10⁻⁹ m)
Since we are asked to provide the answer in units mark = 15%, we need to calculate the value within 15% tolerance.
To do this, we can use the following formula to find the range of acceptable values:
Range = (tolerance / 100) * Value
Range = (0.15) * C
To find the minimum and maximum values:
Minimum Value = C - Range
Maximum Value = C + Range
Now let us calculate the capacitance per unit area:
C = (8.854 × 10⁻¹² F/m) * (8.90) * A / (8.40 × 10⁻⁹ m)
or, C ≈ (9.16 × 10⁻³ F/m²) * A
Therefore, the capacitance per unit area of the cell wall is approximately (9.16 × 10⁻³ F/m²) times the area (A) of the cell wall.
Please note that the calculations provided here assume ideal conditions and may not account for all real-world factors.
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The ______ is a colored membrane capable of contraction and expansion to allow more or less light through the pupil.
Answers
what unique property of carbon enables this element to be "life's chemical backbone"?
Answers
Carbon's unique property is its ability to form strong covalent bonds with diverse elements, enabling complex molecules.
Carbon's unique property as life's chemical backbone lies in its ability to form strong covalent bonds with various elements, including other carbon atoms.
This characteristic allows it to create a wide range of complex molecules, such as carbohydrates, lipids, proteins, and nucleic acids, which are essential to life.
Carbon has four valence electrons, which enable it to form up to four bonds with other atoms, creating diverse structures and allowing for the formation of long chains and rings.
This versatility makes carbon indispensable to biological processes and the foundation of organic chemistry.
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1.How do you describe the motion of the ripples formed in the water?
please answer this
for my cousin
Answers
Answer:
Water is also made of molecules. But during a ripple, the water molecules don't move away from the rock, as you might expect. They actually move up and down. When they move up, they drag the other molecules next to them up – then they move down, dragging the molecules next to them down too.
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What enable bacteria to survive in a wide variety of habitats?
Answers
Bacteria are single-celled organisms having membrane-attached cell organelles instead of a true nucleus. The reason why bacteria may survive in harsh settings is because:
energy-generating enzymes
Endospores
tissue wall
Cyst
Bacteria have the following characteristics:
The primary property of the bacteria is their ability to develop a cyst, which protects them from harmful environmental elements.
For instance, the prokaryotic organism can survive in both hypertonic and hypotonic conditions because to its cell wall.
The bacteria also make endospores, which let them tolerate extremely high temperatures.
The bacteria create cold shock proteins that help them withstand freezing temperatures.
In order for bacteria to survive in harsh settings, protein synthesis, cyst development, and endospores are crucial.
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Pastoral nomadism is most commonly found in which climate region?
Answers
Pastoral nomadism is most commonly found in the climate region of Eurasia, which is an agricultural region.
A type of pastoralism known as nomadic pastoralism involves herding animals in search of new pastures to graze on. Real nomads have erratic migratory patterns. In areas with little arable land, usually in developing nations, nomadic pastoralism is a popular practice, notably in the steppe regions north of Eurasia's agricultural zone.
Neolithic revolution and development of agriculture led to nomadic pastoralism. They started domesticating plants and animals for food during that revolution, and they also started establishing towns. Nomadism has typically coexisted harmoniously with such settled cultures, exchanging animal products for manufactured goods that the nomadic herders did not make.
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which statement is most consistent with the one gene, one enzyme hypothesis originally proposed by beadle and tatum? every gene encodes a separate enzyme. each gene makes one enzyme but not one protein. every enzyme makes one gene. genes and enzymes are important. a gene can only make one enzyme in a cell cycle.
Answers
The correct option is C : Every gene encodes a separate enzyme. One enzyme, one gene The theory holds that each gene encodes a single enzyme.
We now know that this concept is typically (but not entirely) right. Sir Archibald Garrod, a British medical practitioner, was the first to propose that genes and enzymes were linked.
According to Beadle and Tatum, each gene drives the synthesis of one (and only one) enzyme. Beadle and Tatum shared the 1958 Nobel Prize in Physiology or Medicine with J. Lederberg.
They identified a set of mutations known to disrupt the production of arginine, an amino acid required for mould development. Individual mutations, according to their idea, hindered specific steps in the process utilized by the mould to manufacture arginine from precursors in its surrounding media.
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Full Question :
Which statement is most consistent with the one gene, one enzyme hypothesis originally proposed by Beadle and Tatum?
A Every enzyme makes one gene.
B Genes and enzymes are important.
C Every gene encodes a separate enzyme.
D A gene can only make one enzyme in a cell cycle.
E Each gene makes one enzyme but not one protein.
A fossil of an ancient palm tree found in Alaska is an indication that Alaska once had
what kind of climate in its history?
Cold winters and hot summers
warm and humid throughout the year
dry and hot throughout the year
Cold winters and mild summers
Answers
Answer: Warm and humid throughout the year
Explanation: Just took the test
What is the relationship between cell division, cell differentiation, and gene regulation? - Cell division alone is sufficient for embryonic development--each division provides an opportunity to generate unique cells with different patterns of gene expression. - Cell division is the process of regulating transcription and translation and is necessary throughout development: gene regulation is only necessary during fertilization. - Cell division alone would result in a big ball of undifferentiated cells. Cell differentiation occurs as a result of regulation of the expression of certain genes, leading to specialized structure and function of cells - Cell division only occurs during cleavage after the blastula is formed cell differentiation via cene regulation is used to form tissue layers
Answers
The relationship between cell division and gene regulation is Cell differentiation, which leads to specialized structure and function of cells, occurs through the regulation of gene expression. Option C is correct.
C. Cell division alone would result in a big ball of undifferentiated cells. Cell differentiation occurs as a result of the regulation of the expression of certain genes, leading to specialized structure and function of cells. During development, cells undergo a process called cell differentiation, where they become specialized and acquire specific functions. This process is tightly regulated by gene expression, which determines which genes are turned on or off in a cell, leading to the development of specific cell types.
Cell division is responsible for increasing the number of cells during development, but it alone does not determine cell specialization. Instead, gene regulation plays a critical role in guiding cells to differentiate into specific cell types with distinct characteristics. Gene regulation involves mechanisms such as transcription factors, epigenetic modifications, and signaling pathways that control the expression of genes at different stages of development. Through gene apoptosis regulation, cells acquire the necessary instructions to differentiate into various cell types, forming tissues, organs, and ultimately the whole organism.
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The complete question is
What is the relationship between cell division, cell differentiation, and gene regulation? -
A. Cell division alone is sufficient for embryonic development--each division provides an opportunity to generate unique cells with different patterns of gene expression. -
B. Cell division is the process of regulating transcription and translation and is necessary throughout development: gene regulation is only necessary during fertilization. -
C. Cell division alone would result in a big ball of undifferentiated cells. Cell differentiation occurs as a result of regulation of the expression of certain genes, leading to specialized structure and function of cells -
D. Cell division only occurs during cleavage after the blastula is formed cell differentiation via cene regulation is used to form tissue layers
mention 10 forest trees and their botanical names with their uses
Answers
Answer:
Explanation:
California Box Elder- Acer negundo californicum
Japanese Maple- Acer palmatum
Silk Tree- Albizia julibrissin
Strawberry tree- Arbutus unedo
Bird of paradise shrub- Caesalpinia gilliesii
Harlequin Glorybower- Clerodendrum trichotomum
Cypress- Cupressus spec.
Oregon Ash- Fraxinus latifolia
Sweet Bay- Laurus nobilis 'Saratoga'
Explanation:
I hope its help you Thank you
The Domain Archaea contains which of the following Kingdoms?
a. Fungi
b. Eubacteria
c. Protista
d. Archaebacteria
Answers
¿Porque el nitrogeno es esencial para el crecimiento de los hongos, pero no para la aparicion del oxido?
Answers
Two solutions of different concentrations of glucose are separated by a membrane that allows both glucose and water to pass through. when dynamic equilibrium is reached, there will be:____.
Answers
water and glucose molecules will move across the membrane in order to balance the concentrations of glucose on either side of the membrane until equilibrium is reached. The final equilibrium state will be one in which there is an equal concentration of glucose on both sides of the membrane.
The two solutions of different concentrations of glucose are separated by a membrane that allows both glucose and water to pass through.
When dynamic equilibrium is reached, there will be an equal concentration of glucose on both sides of the membrane.
In an osmosis process, a semi-permeable membrane is used.
This membrane allows only the solvent (usually water) to pass through it, but not the solute (e.g. salt, glucose, etc.).
The movement of the solvent is from high to low concentration in order to balance the concentration on both sides of the membrane, which occurs spontaneously.
The solution that has the highest concentration of solutes is the hypertonic solution, whereas the solution that has the lowest concentration of solutes is the hypotonic solution.
In this situation, we're told that the membrane allows both water and glucose to pass through, indicating that it is not a traditional semi-permeable membrane.
As a result, water and glucose molecules will move across the membrane in order to balance the concentrations of glucose on either side of the membrane until equilibrium is reached.
The final equilibrium state will be one in which there is an equal concentration of glucose on both sides of the membrane.
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PLSSS HELP IF YOU TURLY KNOW THISSS
Answers
Answer:
The correct answer is D. Salinity
Hope this helps!
Which of the following would indicate that a phage has successfully replicated and destroyed bacterial cells?
(a) presence of a colony
(b) presence of a plaque
(c) presence of a clearing zone/spot
(d) b & c
Answers
what happens in a fertilisation of a plant
Answers
Answer:
Fertilization occurs when one of the sperm cells fuses with the egg inside of an ovule. After fertilization occurs, each ovule develops into a seed.
What is the primary molecule that makes up cell membranes?
Answers
Answer:
Phospolipids are the primaey molecules that makes up cell membranes.
Which spinal deviation is characterized by an excessive inward curvature of the lumbar spine and anterior pelvic tilt
Answers
The spinal deviation characterized by an excessive inward curvature of the lumbar spine and anterior pelvic tilt is called lordosis.
Lordosis, sometimes referred to as swayback, can affect the cervical and lumbar areas of the spine. It is frequently referred to as lumbar lordosis when it affects the lumbar area. Numerous things, such as bad posture, obesity, pregnancy, and specific medical disorders, might contribute to this disease. Depending on the underlying cause and severity of the problem, there are several treatment options for lordosis, including physical therapy, weight loss, and the use of braces or other supporting devices. The lumbar spine's inward bend, located immediately above the buttocks, is called lordosis. It's typical to have some lordosis. Swayback is the result of excessive arcing.
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Q- Which spinal deviation is characterized by an excessive inward curvature of the lumbar spine and anterior pelvic tilt?
Which behavior is both territorial and used for courtship?
1.) baring teeth as a sign of aggression 2.) sparring or wrestling using antlers or horns
3.) dance rituals with potential partners
4.)defending a nest from predators
Answers
Answer:
2.) sparring or wrestling using antlers or horns
Explanation:
Territorial behavior is defined as the animal behavior in which animals protect their territory from other species.
Courtship behavior is defined as the animal behavior that is involved in mating and eventual reproduction.
Sparring or wrestling using antlers or horns is both territorial and used for courtship. Many animals or males uses their antlers or horns for wrestling or to fight with other animals to protect their territory while some males are involved in ritualized mating behaviors that include antler wrestling (sparring). The loud vocalizations during antler wrestling show the dominance of males that females and leads to mating.
Hence, the correct answer is "2.) sparring or wrestling using antlers or horns".
Use the image on the right to match the following phrases to the correct level of organizational hierarchy.
Answers
Answer:
There is no image Could you please put the image
Explanation:
Thank You
State True or False - “During meiosis, homologous pairs separate and each gamete receives one member of each pair.”
Answers
Answer:
True i believe, not sure though!!!
Explanation:
Answer:
true
Explanation:
I really don't now but I hope it's right
Two fruit flies that are heterozygous for body color and eye color are crossed. Brown body color is dominant to black body color. Red eye color is dominant to brown eye color. Use the Punnett square to determine the ratio of offspring with: Brown body and red eyes Brown body and brown eyes : Black body and red eyes : Black body and brown eye.
Answers
The ratio of offspring that possess the following phenotype is as follows:
Brown body and red eyes: 9Brown body and brown eyes: 3Black body and red eyes : 3Black body and brown eye: 1This question involves two genes coding for body color and eye color in fruit flies respectively. The brown body color allele (B) is dominant over the black body color allele (b) in the first gene while the red eye color allele (R) is dominant over the brown eye color allele (r) in the second gene. In a dihybrid cross between two fruit flies that are heterozygous for both genes i.e. BbRr × BbRr, the allelic combinations of gametes produced by each parent fruit fly will be:BbRr- BR, Br, bR and brUsing these gametes to complete a punnet square (see attached image), 16 possible offsprings will be produced in a ratio 9:3:3:1 where;Brown body and red eyes (B_R_) : 9Brown body and brown eyes (B_rr) : 3 Black body and red eyes (bbR_) : 3Black body and brown eye (BbRr) : 1Hence, the ratio of the offsprings will be 9:3:3:1Learn more about punnet square at: https://brainly.com/question/14504341?referrer=searchResults
Answer:
9, 16, 3, 16, 3, 16, 1, 16
Explanation:
Brown body and red eyes ⇒ 9 ⇒ 16
Brown body and brown eyes ⇒ 3 ⇒ 16
Black body and red eyes ⇒ 3 ⇒ 16
Black body and brown eyes ⇒ 1 ⇒ 16