[question 39] individuals with the genotypes aabbccdd and aabbccdd are crossed. assuming independent segregation and complete dominance for each trait, the expected proportion of the progeny that will have at least one dominant allele at each locus is: group of answer choices 81/256 9/16 12/16 27/64 none of the other answer choices is correct

The base pairs are stacked on top of each other, forming the interior of the helix, while the sugar-phosphate backbones of the two strands wind around each other on the exterior of the helix.

DNA helix formation requires two complementary DNA strands to come together in an antiparallel orientation, meaning that the 5' end of one strand aligns with the 3' end of the other strand.

The two strands are held together by hydrogen bonds between the nitrogenous base pairs: adenine (A) pairs with thymine (T), and cytosine (C) pairs with guanine (G).

The directionality of DNA refers to the orientation of the sugar-phosphate backbone of each strand. Each nucleotide in the DNA backbone has a 5' end, which is the end with a phosphate group attached to the 5' carbon of the sugar molecule, and a 3' end, which is the end with a hydroxyl (OH) group attached to the 3' carbon of the sugar molecule.

The two strands of DNA run in opposite directions with respect to their 5' to 3' orientation. One strand runs in the 5' to 3' direction, while the other runs in the 3' to 5' direction, resulting in the antiparallel orientation of the two strands in the DNA double helix.

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Answer:

homologous

Explanation:

yeah

The homologous chromosomes separate and go to distinct gametes.

• In se-xually reproducing organisms, the formation of egg and sperm cells is known as meiosis.

• In meiosis, the diploid cells go through DNA replication, succeeded by two rounds of cell differentiation, giving rise to four haploid s-ex cells.

• The separation of homologous chromosomes takes place in meiosis I.

• During meiosis I, the separation of homologous chromosomes takes place into two distinct nuclei, resulting in the reduction of ploidy level in the first division.

Thus, the given blank can be filled with homologous.

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Answer:

nearly one million tons per year

Explanation:

Midgely would receive the Society of Chemical Industry’s Perkin Medal for this research in 1937; in 1941, he was awarded the Priestley Medal, the American Chemical Society’s highest award, for his contributions to chemistry.

By the early 1970s, CFCs were in widespread use, and worldwide production of the compounds had reached nearly one million tons per year, representing roughly a $500 million slice of the chemical industry.

All living things require an outside source of materials and energy. The sum total of all chemical reactions that occur within a cell to provide these materials and energy is called metabolism.

Energy is the ability to perform work.  In an organism's body energy is required to perform each and every processes inside the body. In eukaryotic organisms this energy is derived by the mitochondria. In humans and various other species, the major source of energy is ATP.

Metabolism is the sum total of all the reactions taking place inside the body. These reactions can be anabolic or catabolic. The anabolic reaction involve the formation of larger molecules from the smaller ones. The catabolic reactions involve the breakdown of larger molecules into smaller ones.

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Meroblastic cleavage occurs in sea urchins, but not in humans or birds. At the time of implantation, the human embryo is called a blastocyst. Extraembryonic membranes develop in mammals, birds, and reptiles.

Meroblastic cleavage is a type of cell division that occurs in the early stages of embryonic development. In sea urchins, the cleavage is meroblastic, meaning it only occurs in a portion of the embryo due to the presence of yolk. This type of cleavage allows for the development of a blastula, which eventually forms the sea urchin embryo. However, in humans and birds, the cleavage is holoblastic, meaning it occurs throughout the entire embryo. Therefore, option (a) is incorrect, and the correct answer is (e) birds, but not sea urchins or humans.

During human development, after fertilization, the zygote undergoes several divisions to form a hollow ball of cells called a blastocyst. At this stage, the blastocyst implants into the uterine lining, marking the beginning of pregnancy. Therefore, the correct answer to the second question is (d) blastocyst.

Extraembryonic membranes are structures that develop in the early stages of embryonic development and provide support, protection, and nourishment to the embryo. In mammals, birds, and reptiles, extraembryonic membranes such as the amnion, chorion, and yolk sac develop. These membranes are essential for the survival and proper development of the embryo. Therefore, the correct answer to the third question is (d) mammals, birds, and reptiles.

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Answer:

Explanation:

Please provide the population to enable me do the calculation

Answer:

Percent increase between years 1 and 2:

(5,780 – 3,845) ÷ 3,845 = 0.50 = 50% increase

Percent increase between years 2 and 3:

(15,804 – 5,780) ÷ 5,780 = 1.73 = 173% increase

Percent increase between years 3 and 4:

(52,350 – 15,804) ÷ 15,804 = 2.31 = 231% increase

Explanation:

Gradually turn the crude focus knob until you can see the cells. Turn the fine focus knob slowly until the cells are in focus and visible.

Magnification is the process of enlarging something's apparent size rather than its physical size.

This enlargement is measured by a calculated number known as "magnification." When this number is less than one, it refers to a size reduction, also known as minification or de-magnification.

The magnification of a compound microscope is the product of both lenses, so if the microscope has a 10x eyepiece and a 40x objective, the total magnification is 400x. Magnification is defined as the ratio of the image size to the object size.

The student should use the adjustment knobs to bring the sample back into focus after selecting the x40 or x10 objective lens.

Thus, these steps are necessary to see cell's magnification.

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Running a marathon can trigger lactic acid fermentation in our bodies. The fermentation of alcohol. Alcoholic fermentation, a chemical process that turns glucose into ethanol and carbon dioxide, takes place in the grapes, hence  for 1- C, and for 2 – A option is correct.

The body cannot function without lactic acid. It facilitates the production of glucose, cell respiration, and molecular signalling.

Alcoholic fermentation is a biological process that turns glucose into ethyl alcohol and carbon dioxide using yeast, some types of bacteria, or a few other microorganisms.

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It is true that denaturing an apoenzyme will destroy the three-dimensional shape of the protein, making it non-functional. Apoenzymes, also known as inactive enzymes, are enzymes that are not completely folded and require additional components to become catalytically active.

The apoenzyme part of an enzyme is the protein part of the enzyme, whereas the cofactor is a non-protein component. It is necessary to maintain the three-dimensional structure of the protein to make the enzyme functional. If this three-dimensional structure of the protein is destroyed, the enzyme loses its function.

The denaturation of apoenzymes can be caused by a variety of factors, including temperature changes, pH variations, chemical reactions, etc. It's crucial to keep the protein in its correct shape to ensure proper function.

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To accurately determine the trait's selection mechanism based solely on its frequency distribution in a large population, additional information or analysis would be required. Frequency distributions alone do not provide a definitive indication of the specific selection mechanism acting on a trait.

However, we can briefly discuss the concepts of each selection mechanism:

A) Directional selection: This occurs when individuals with one extreme of the trait distribution have a higher fitness and are favored by natural selection, leading to a shift in the population towards that extreme.

B) Stabilizing selection: This occurs when individuals with intermediate values of the trait have higher fitness, leading to a reduction in variation and a narrower distribution of the trait in the population.

C) Disruptive selection: This occurs when individuals with extreme values of the trait have higher fitness, resulting in a bimodal distribution with the two extremes being favored.

D) Sexual selection: This occurs when certain traits are favored for mating success, often leading to the development of elaborate or exaggerated traits in one sex, such as bright colors or elaborate courtship displays.

E) Random selection: This refers to changes in allele frequencies due to random events, such as genetic drift, rather than due to selective pressures.

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Answer:  Hydrochloric acid

Explanation: Hydrochloric acid is not typically formed in the atmosphere as part of acid deposition. Acid deposition, also known as acid rain, is a broad term that includes any form of precipitation with acidic components, such as sulfuric or nitric acid that fall to the ground from the atmosphere in wet or dry forms.

The protein, when mutated, which would inhibit backward, but not outward, transport along axon microtubules is dynein.What are microtubules?Microtubules are structures that are part of the cytoskeleton of eukaryotic cells.

These structures are composed of dimers of α-tubulin and β-tubulin proteins that assemble into linear polymers, which in turn will form hollow tubes. The microtubules have numerous functions in the cell, including acting as roads for motor proteins to move cargo, and helping to maintain cell shape and polarity.What is dynein?Dynein is a protein that transports cellular cargo along microtubules in a directional manner. When the protein is mutated, it would inhibit backward, but not outward, transport along axon microtubules.

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Answer: C. The particle is a virus because it has genetic information and can infect humans.

Explanation: edmentum answer coreect

Proteins that are produced in a disease tissue and can act as a means of tracking a disease's progression (such as psa in prostate cancer) is known as biomarker.

A biological molecule that is a marker for a healthy or unhealthy process, a condition, or a disease that is detected in blood, other bodily fluids, or tissues. The effectiveness of a treatment for a disease or condition can be evaluated using a biomarker. Molecular marker and signature molecule are some names for it.

In order to monitor and anticipate a person's or a population's state of health so that the most suitable therapeutic action may be planned, biomarkers are the measurements used to conduct a clinical assessment, such as blood pressure or cholesterol level.

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Answer: A) Fat is to a lipid.

Explanation:

Answer:

The answer is somewhere on braninly

Explanation:

Just use the search var and type your question.

Answer:

The mammal that retains its embryo in its uterus for the full term of the pregnancy is the bat. A koala and the kangaroo both carry their babies to term in pouches.

Explanation:

Annull mutation in which of these genes would cause ABC protein to be produced at normal levels but in the wrong location is MP. The main answer is MP.

ABC gene produces mRNA encoding the ABC protein, and ZBP1 protein binds Abc mRNA and prevents its translation. MP (motor protein) transports ZBP1-bound mRNA to its destination, while Src protein is located at the destination and causes ZBP1 to dissociate from mRNA, allowing it to be translated.

In a mutation, the characteristics of DNA are altered, resulting in different genes being expressed or the production of altered proteins. A mutation in the MP gene can cause the protein to be produced at normal levels but in the wrong location. As a result, mRNA bound with ZBP1 would not be transported to its destination.

The type of mutation that would interfere with the attenuation mechanism in the tryptophan operon is the deletion mutation. In the tryptophan operon, the attenuation mechanism is used to regulate the synthesis of tryptophan. When the tryptophan levels are low, the operon is activated, and transcription takes place, allowing the synthesis of tryptophan. When tryptophan levels are high, the attenuation mechanism is activated, and transcription is halted. A deletion mutation, which removes one or more nucleotides from the DNA sequence, can interfere with the folding of RNA, resulting in a premature termination of transcription, which will cause attenuation to fail.

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Answer:

C

Explanation:

Answer:

C

Explanation:

Answer:

Predator Adaptations

Their mechanical adaptations such as sharp teeth, claws, thick skin and faster speed and superior strength help them to take over the prey. The chemical adaptations include venom, toxins and poison to kill the prey.

Difficulty in swallowing may be a sign of damage to the glossopharyngeal nerve (cranial nerve IX) and/or the vagus nerve (cranial nerve X).

These nerves are responsible for controlling the muscles involved in swallowing and damage to either of them can lead to difficulty in swallowing or even complete inability to swallow.

Difficulty in swallowing, also known as dysphagia, can be a sign of damage to several cranial nerves, as well as other structures involved in the swallowing process. However, the most commonly implicated cranial nerve in dysphagia is the glossopharyngeal nerve (CN IX).

The glossopharyngeal nerve provides motor innervation to the stylopharyngeus muscle, which helps elevate the pharynx during swallowing. It also provides sensory innervation to the posterior one-third of the tongue, the oropharynx, and the tonsils, which are involved in the taste and sensation of food.

Other cranial nerves that can be involved in dysphagia include the vagus nerve (CN X), which innervates the muscles of the pharynx and esophagus, and the hypoglossal nerve (CN XII), which innervates the tongue muscles.

Damage to these nerves can result in difficulty with initiating and coordinating the complex sequence of movements required for swallowing.

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Option A is Correct. Parental qualities are represented in a Punnett square by a letter that stands in for an allele. The dominant version of a gene is denoted by a capital letter (allele).

In Punnett Square, a grid and letters are used. Particularly, capitalized letters stand for dominant alleles whereas lowercase letters are used for recessive alleles. This tool displays the known genotypes of each parent to aid in predicting the potential genotypes of their children.

Each of the two Punnett square boxes (across the top or on the left) in which the parent genes for a characteristic are positioned really indicates one of the two potential genotypes for a parent sex cell. Genotype is a term used to describe an organism's genes; it is represented by two letters for a single characteristic.

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The list contains only omega-3 fatty acids is  EPA, DHA, alpha-linolenic acid.

What is fatty acids?

Fatty acids are organic molecules made up of a chain of carbon atoms with hydrogen atoms attached to them. They are essential components of fats and oils, which are vital for our health and nutrition. There are three types of fatty acids - saturated, monounsaturated, and polyunsaturated. Saturated fatty acids are typically solid at room temperature and are mostly found in animal-based foods such as meat, butter, and cheese. Monounsaturated and polyunsaturated fatty acids, on the other hand, are liquid at room temperature and are mostly found in plant-based foods like nuts, seeds, and vegetable oils.

EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid) are both omega-3 fatty acids that are found in fish and seafood. Alpha-linolenic acid is also an omega-3 fatty acid, but it is found in plant-based sources like flaxseed, chia seeds, and walnuts.

Linoleic acid and arachidonic acid are both omega-6 fatty acids, which are also important for our health but are not part of the omega-3 family. Therefore, the only list that contains exclusively omega-3 fatty acids is B, EPA, DHA, and alpha-linolenic acid. Omega-3 fatty acids have been shown to have numerous health benefits, including reducing inflammation, improving heart health, and supporting brain function.

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how many meters per hour did marica run ? 12,600

The seed analysis test is a study that helps to determine the ancestors of the seeds by performing the genome analysis of the seeds. In this way, the origin and historical development of the seed is determined. With today's biotechnology, it is ensured that the old conditions of the deteriorated seed structures are preserved. For this purpose, seed gene banks were established. In this way, the continuity of organic nutrients is ensured.

Answer:

Pathogenic

Explanation:

Esto es debido a que en los lugares húmedos las plantas absorven el agua con las hojas y no necesitan hacer crecer la raíz para buscar agua. En cambio, las plantas que viven en lugares calurosos necesitan agua por lo que expanden las raíces hacia abajo para poder encontrar líquido e hidratarse.

Answer:

A I think is the correct answer.

Explanation: