Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?

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The gene for tallness (T) is dominant over the gene for shortness (t) in pea plants. A homozygous dominant pea plant is crossed with a heterozygous pea plant, and 200 seeds are produced. Approximately how many of these seeds can be expected to produce plants that are homozygous dominant?

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Does unwinding DNA cause aging?

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How is co-dominance different from incomplete dominance

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A blastomere was removed from an 8-cell human embryo, and its beta-globin gene was amplified by PCR. The beta-globin DNA was treated with an enzyme that cuts on either side of and within the normal allele (producing a small fragment), but not within the sickle cell allele (producing a large fragment). Electrophoresis of the treated DNA from the blastomere demonstrated the presence of both a large and small fragment derived from the beta-globin genes. How should you interpret this test?

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what is the pairing rule for deoxyribonucleic acid?

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A base deletion occurs in the regulator gene of the LAC operon. Describe how the operation of the LAC operon might be affected?

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what are transpoons?

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Is Haemophilia a sex linked disease?how?

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which protein contains all the 20 amino acids?

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A normal woman whose father was a hemophiliac marries a normal man. What are the chances of hemophilia occurring in their children?

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Has vitamin c been produced in a human naturally before?

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