If a mutation has no effect on fitness, it may stay in the gene pool indefinitely.
TRUE/FALSE
Answers
The given statement "If a mutation has no effect on fitness, it may stay in the gene pool indefinitely" is true because If a mutation has no effect on fitness, meaning it neither enhances nor reduces an organism's ability to survive and reproduce.
It is considered neutral in terms of natural selection. In this case, the mutation can persist in the gene pool indefinitely. Since natural selection acts on traits that affect an organism's fitness, mutations that have no impact on fitness are not subject to selective pressures. As a result, these neutral mutations can accumulate and persist in a population without being eliminated by natural selection.
Over time, the frequency of these neutral mutations may fluctuate due to genetic drift, migration, or other factors, but they can remain in the gene pool over generations. It's important to note that even though a neutral mutation may persist, it may still be lost or go to fixation in a population due to random chance or other evolutionary forces.
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Related Questions
please help me !!!!!
Answers
Answer:
C
Explanation:
A. is incorrect because the cell displayed is an animal cell not a plant cell, so it cannot photosynthesize. The organelle shown is actually the ER.
B. is incorrect because the structure labelled is the nucleus, not a vacuole. Vacuoles store substances like waste, not DNA.
C. Is correct because the pickle-like organelle is the Mitochondria, also known as the powerhouse of the cell due to cellular respiration taking place there.
D. Is incorrect because the cellular membrane of the animal cell is not rigid like the cell wall of the plant cell, instead it is more semi-permeable.
Hope I could help! :)
1. Describe the role of autocatalytic replication in the prebiotic evolution leading up to the origin of life on earth. 2. Describe the adaptations relevant to synapsids and cynodonts for the evolution of humans.
Answers
Autocatalytic replication is an important part of the prebiotic evolution leading to the origin of life on Earth. It is believed that this replication process occurred spontaneously in a prebiotic environment, leading to the formation of the first living organisms.
The Autocatalytic replication was facilitated by the presence of organic molecules, like RNA and amino acids. Over time, these organisms evolved and adapted to their environment, eventually giving rise to the complex life forms we see today.
Synapsids were the first reptiles to develop a single temporal opening in their skulls, which allowed for a larger jaw muscle and improved biting ability. Synapsids and cynodonts are two groups of reptiles that played a key role in the evolution of mammals, including humans. The adaptation allowed them to compete more effectively for resources and led to their dominance during the Permian period.
Cynodonts were a group of advanced synapsids that evolved during the Triassic period they had a number of adaptations that made them well-suited to life on land, including more efficient lungs, better hearing, and the ability to regulate their body temperature. These adaptations allowed them to thrive in a variety of environments and gave rise to the first true mammals.
The evolution of synapsids and cynodonts played a key role in the evolution of mammals, including humans. Their adaptations allowed them to compete more effectively for resources and survive in a changing environment, leading to the development of increasingly complex and sophisticated life forms.
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Suggest one other use of glucose in a potato plant that's still growing below ground
Answers
Answer:
glucose is used to make cell walls, make protein amd stored as starch.
> Produce respiration
> Store starch underground, so I knew plant can grow
> Glucose which is soluble is converted into insoluble starch for storage
Hope this helps :)
What is disruptive selection?
Answers
In nature, not all individuals in a biological population has the same reproductive success. Additionally, the reproductive succes of an individual may be related to a heritable trait. Disruptive (natural) selection is operating when indivuals with extreme values for an heritable trait have a greater reproductive succes that the ones with intermediate values for the same trait.
Plants in the rainforest contribute to precipitation there through transpiration.
true
false
Answers
It is True that Plants in the rainforest contribute to precipitation there through transpiration.
Through the process of transpiration, in which plants release water from their leaves during photosynthesis, rainforests contribute to the water cycle by adding water to the atmosphere. Rain clouds are formed as a result of this moisture, which releases water back into the rainforest.
When forests are cut down, less moisture enters the atmosphere, and less rain falls, which can occasionally result in drought.
Borneo and the Amazon rainforests have been severely affected by droughts in recent years. These have been exacerbated by deforestation.
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What does "the process of making more of the same producing offspring" called?
Thanks..
Answers
Help me with this plz ASAP
Answers
Answer:
I think letter D
Explanation:
Sana maka tulong
Answer:
D) Paramecium
Explanation:
sorry if my answer is wrong
Which statement describes surface waves?
Answers
Answer:
they can move in a rolling pattern throught rock like an ocean wave
Explanation:
because as you can see when you throw a rock there is a wave form at the surface
Several different plant species grew in an empty lot. The city council decided to turn the lot into a park, so they had the ground torn up and planted with grass to create a playing field. The ecological factor that was most likely affected by the change was the lot's- A biomass.
B temperature.
C biodiversity.
D hydrologic cycle. â
Answers
The ecological factor that was most likely affected by the change of turning an empty lot into a park with a playing field was biodiversity. The answer is C.
The initial empty lot was supporting several different plant species, indicating a relatively high level of biodiversity. However, when the lot was torn up and planted with grass, the number of plant species was reduced to just one, leading to a decrease in biodiversity.
This change may have also affected other ecological factors such as soil quality, nutrient cycling, and even the hydrologic cycle. It is important to consider the potential impact of human activities on biodiversity and take steps to minimize any negative effects.
Maintaining a diverse ecosystem can help to promote resilience and stability in the face of environmental changes. Hence, C is the right option.
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The genome of escherichia coli consists of 4380 genes, encoding 4290 proteins, in just 5175720 base pairs. what percent fraction of the escherichia coli genes encode proteins?
Answers
According to the above formula, the percentage of genes that code for proteins is 97.95%.
Briefing:4380 genes are found in total.
4290 total proteins are encoded by the genes.
There are 5175720 base pairs overall.
Percentage of genes that code for proteins: Although there are 4380 genes overall, only 4290 of them code for proteins.
Total number of protein-coding genes divided by the total number of genes present gives the fraction of protein-coding genes (4290/4380), which equals 0.9795.
Percent fraction of genes encoding proteins
= Fraction of genes encoding proteins * 100
= 0.9795*100
The percentage of genes that code for proteins is 97.95%.
Where are the genes in DNA?Deoxyribonucleic acid (DNA) segments called genes are responsible for carrying out specified protein functions in one or more types of bodily cells. The structures called chromosomes found in cells house a person's genes. Chromosomes, which are found in the cell nucleus, are where genes are found.
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Which of the following best describes a suspension?
Answers
Answer:
where is the following??????
Answer:
Can you write down the options? It will be easier....
As air is inhaled, which of these four structures is the last to be encountered?
a. bronchiole
b. alveoli
c. capillaries
d. veins
Answers
As air is inhaled, the structure that is last encountered is :
b. alveoli.
As air is inhaled, it first enters the nasal cavity or mouth, then passes through the pharynx, larynx, trachea, bronchi, bronchioles, and finally reaches the alveoli, which are the tiny air sacs in the lungs where gas exchange occurs.
The alveoli are the primary sites of gas exchange in the lungs. Oxygen from the inhaled air diffuses across the thin walls of the alveoli into the surrounding capillaries, while carbon dioxide from the bloodstream diffuses in the opposite direction to be exhaled. This exchange of gases occurs across the alveolar membrane, allowing oxygen to enter the bloodstream and carbon dioxide to be removed.
Thus, the correct option is : (b) alveoli
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describes a change of the sequence of a dna molecule
Answers
Answer:
mutation
Explanation:
occurs when a DNA gene is damaged or changed in such a way a to alter the genetic message carried by that gene. A mutation is an gent of substance that can bring about permanent alteration to the physical composition of a DNA gene such that the genetic message is changed
1. Compare and contrast ATP and NADH.
Answers
Answer:
Glycolysis produces 4 ATP molecules, giving it a net gain of 2 ATP molecules. The four high energy electrons that are removed by glycolysis are picked by an electron carrier called NAD. NAD becomes NADH.As it spins it grabs an ADP molecule and attaches a phosphate, forming high energy ATP.
Explanation:
Both NADPH and ATP are phosphorylated compounds, both are very important catabolic as well as anabolic processes. To explain the difference, their respective functions/roles in biochemical processes should be described along with relevant chemical properties.
ATP (Adenosine triphospahte) is called an energy rich molecule because of the large negative free energy of its hydrolysis (And has nothing to do with high bond energy).
30.5 kilo Joules or 7.3 kilo calorie energy is liberated after hydrolysis of one ATP molecule to form ADP (Adenosine diphosphate) and phosphate.The reaction is almost irreversible
what do the term phycobiont and mycobiont signify ?
Answers
Answer:
Phycobiont refers to the algal component of the lichens and mycobiont refers to the fungal component. Both of these are present in a symbiotic relationship in which algae prepare food for fungi due to the presence of chlorophyll whereas the fungus provides shelter to algae and absorbs water and nutrients from the soil.
Explanation:
Help me plsss
This will be a reall help
Answers
Answer:
Im no expert but i think around 50%
Answer:
50% RR, 50% Rr
100% of offspring will be round because all offspring have the dominant round gene. Hope this helps!
The Punnett square would look like this:
Which of these would be considered a transgenic organism? a human treated with insulin produced by E. coli bacteria a rat with rabbit hemoglobin genes a bacterium that has been treated with a compound that affects the expression of many of its genes a fern grown in cell culture from a single fern root cell a houseplant propagated from the cuttings of another houseplant
Answers
Answer:
a rat with rabbit hemoglobin genes
Explanation:
When the genome of an organism is modified in the field of genetic engineering,by transplanting the gene(DNA) from one organisms to another,(by vectors) or alteration of the gene components,the resulting organism produced or formed is called Transgenic organism.
This process of genetic engineering makes use of recombination of genes to alter the genome of the transgenic organism.
Thus by transferring to rat ( the DNA for Hb) as the rabbit Hb,the gene( or genome) for producing Hb in tats has been modified by that of rabbit.Hence Rat is said to transgenic.
Besides animals crop plants are also genetically modified.Thus the genome of some crops are altered to resist herbicides and pesticides. Some species of rice (golden rice)have been modified to add certain vitamins to improve the nutritional values.
Genetically modified bananas as edible vaccines are another example
A woman who has given birth to one or more children who reached the age of viability (20 weeks of gestation), regardless of the number of fetuses delivered and regardless of whether those children are now living
Answers
A woman who has successfully given birth to one or more children who reached the age of viability, typically around 20 weeks of gestation, regardless of the number of fetuses delivered, and regardless of whether those children are currently alive, is commonly referred to as a mother of viable children.
This term acknowledges the significant milestone of fetal development reached by the children, indicating that they had a chance of survival outside the womb. The number of children delivered does not affect this classification, as long as they all met the viability threshold.
It is important to note that the term does not differentiate between living and deceased children, focusing solely on their potential for survival at a certain stage of gestation.
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Which sentence BEST explains how a unicelullar organism gets nutrients?
Answers
Since unicellular organisms are composed of just one cell, this means that they cannot have tissues, organs, or systems, so A, C, and D are simply not possible.
B, it takes the nutrients through the cell membrane, would be the correct answer.
Most plant growth takes place in the ____________________ of the root
Answers
Answer: Primary Growth
Most primary growth occurs at the apices, or tips, of stems and roots.
Explanation:
What accounts for genetic material from each of an organism’s parents being present in sperm and egg cells?
Answers
Answer:
DNA
Explanation:
DNA (deoxyribonucleic acid) is the genetic material of living organisms. ... DNA is also passed on at the level of organisms, with the DNA in sperm and egg cells combining to form a new organism that has genetic material from both its parents.
If you heat a cell to a moderately higher temperature than it is normally used to, which molecule will stop working first?
Answers
When a cell is exposed to higher temperatures than it is accustomed to, one of the molecules that may stop working first is the enzyme.
Enzymes are protein molecules that catalyze biochemical reactions within the cell. However, enzymes have specific temperature ranges at which they function optimally. If the temperature exceeds this range, the enzyme's structure can become denatured, causing it to lose its functional shape and activity.
The denaturation of enzymes can disrupt their ability to bind to substrates and facilitate chemical reactions, thus affecting various cellular processes. As a result, the overall metabolic activity of the cell can be compromised.
It's important to note that different enzymes have different temperature optima and thermal stability. Some enzymes may be more tolerant to higher temperatures, while others may be more sensitive and prone to denaturation at relatively lower temperatures.
In addition to enzymes, other cellular components, such as membranes and proteins, can also be affected by excessive heat. Disruptions in membrane integrity and protein structure can have detrimental effects on cell function and viability.
Overall, the specific molecule that stops working first when a cell is heated to a moderately higher temperature will depend on the specific cell type, the temperature range, and the thermal stability of the molecules involved.
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Which of the following enzymes is responsible for releasing fatty acids from dietary triacylglycerols for uptake by the intestinal mucosa cells?
(a) Adipocyte triglyceride lipase
(b) Hormone sensitive lipase
(c) Intestinal lipase
(d) Lipoprotein lipase.
Answers
The enzyme responsible for releasing fatty acids from dietary triacylglycerols for uptake by the intestinal mucosa cells is (c) intestinal lipase.
Intestinal lipase, also known as pancreatic lipase-related protein 2 (PLRP2), is produced by the pancreas and secreted into the small intestine. It plays a crucial role in the digestion and absorption of dietary fats. Intestinal lipase acts on triacylglycerols (triglycerides) present in the diet and breaks them down into fatty acids and monoglycerides. These breakdown products can then be taken up by the intestinal mucosa cells for further processing and absorption.
Adipocyte triglyceride lipase (a) and hormone-sensitive lipase (b) are enzymes primarily involved in the mobilization of stored fats from adipose tissue, releasing fatty acids into the bloodstream to be used as an energy source. They are not directly involved in the digestion and absorption of dietary fats.
Lipoprotein lipase (d) is an enzyme that plays a crucial role in the metabolism of circulating lipoproteins. It acts on triglycerides present in circulating lipoproteins, such as chylomicrons and very low-density lipoproteins (VLDL), and facilitates the release of fatty acids from these lipoproteins for uptake by various tissues. Lipoprotein lipase is not directly involved in the digestion of dietary fats within the intestine.
Therefore, the correct answer is (c) Intestinal lipase.
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Which enzyme allows a modified form of glucose to get confined within the cell since no transporter for this modified form exists. What modification does the enzyme make and what is the mechanism reaction type
Answers
The enzyme which allows a modified form of glucose to get confined within the cell since no transporter for this modified form exists is known as hexokinase.
The modification that the enzyme makes is phosphorylation, whereby a phosphate group is added to the glucose molecule, resulting in glucose-6-phosphate. This modification of glucose-6-phosphate is essential as it keeps the glucose within the cell, and thus it can be used as a source of energy for the cell by glycolysis.Glucose-6-phosphate can then enter the glycolytic pathway, whereby it can either be converted into glycogen or pyruvate through a series of reactions.
This pathway is considered to be an anaerobic pathway since it does not require oxygen to occur. The mechanism reaction type in which glucose is phosphorylated is a transferase reaction, whereby a phosphate group is transferred from ATP to glucose, resulting in glucose-6-phosphate. Hexokinase is an essential enzyme in the body since it helps in maintaining glucose homeostasis.
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Viral proteins are categorized as early, middle, and late. Early proteins typically are necessary for
• production of viral mRNA.
• production of viral mRNA and copying the viral genome.
• copying the viral genome.
• packaging of DNA into the nucleocapsid.
Answers
The correct statement is: Early viral proteins typically are necessary for the production of viral mRNA.
Early proteins, also known as immediate-early proteins, are synthesized shortly after viral infection and are involved in the early stages of the viral replication cycle. They are responsible for regulating viral gene expression and initiating the synthesis of viral mRNA (transcription). These proteins often act as transcription factors that bind to viral promoters and enhance the production of viral mRNA from the viral genome.
The other options mentioned in the statement do not accurately represent the role of early proteins:
Early proteins are not involved in the copying of the viral genome. This task is typically carried out by viral enzymes such as DNA polymerase or RNA-dependent RNA polymerase.
Packaging of DNA into the nucleocapsid is a task generally performed by viral proteins produced later in the viral replication cycle, rather than early proteins.
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Is poaching considered a limiting factor? (please explain why or why not)
Answers
Answer: No, a limiting factor is something that you can’t survive without.
Explanation: Poaching is not a limiting factor.
Answer:
It is
Explanation:
because if someone is killing animals then that animal that animal that animal eats its thriving. Because of the change in popluation
Wind, water, and ice are often involved in weathering and erosion, which can cause changes on Earth’s surface. However, weathering and erosion are not the same processes. Which of the following statements best describes how these two processes are different?
Answers
Answer:
Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time. The length of exposure often contributes to how vulnerable a rock is to weathering
John Merrick suffered from a disease that caused an abnormal growth of the bones, skin, and the head
Answers
Answer:
It was most likely Proteus syndrome
Explanation:
Proteus syndrome is an uncommon disorder characterized by bone, skin, and other tissue expansion. The condition causes tissues and organs to expand out of proportion to the rest of the body. Asymmetrical overgrowth occurs when the right and left sides of the body are impacted differentially.
I NEED THIS QUICK!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Which compound is a metabolic intermediate of the light-independent reactions in photosynthesis?
ATP
PGA
RuBP
NADPH
Answers
Answer:
PGA not sure But Ithink that the correct answer
Explanation:
How would you describe the
structure of the cell?
Answers
Answer:
A cell is a mass of cytoplasm that is bound externally by a cell membrane. Usually microscopic in size, cells are the smallest structural units of living matter and compose all living things. Now put that into your own words.
Explanation: