4. Set up the Punnet squares for each of the crosses listed below. a. Round seeds are dominant to wrinkled seeds. IMAR What's the probability (percentage) that the offspring will be Rr x rr round? What's the probability (percentage) that the offspring will be RR x rr round? What's the probability (percentage) that the offspring will be RR x Rr round? What's the probability (percentage) that the offspring will be Rr x Rr round? 5. In guinea pigs, the allele for short hair is dominant. What genotype would a heterozygous short haired guinea pighave? What genotype would a pure breeding short haired guinea pig have? What genotype would a long haired guinea pig have?

4. Set up the Punnet squares for each of the crosses listed below. a. Round seeds are dominant to wrinkled seeds. IMAR What's the probability (percentage) that the offspring will be Rr x rr round? What's the probability (percentage) that the offspring will be RR x rr round? What's the probability (percentage) that the offspring will be RR x Rr round? What's the probability (percentage) that the offspring will be Rr x Rr round? 5. In guinea pigs, the allele for short hair is dominant. What genotype would a heterozygous short haired guinea pighave? What genotype would a pure breeding short haired guinea pig have? What genotype would a long haired guinea pig have?

Biology: The Unity and Diversity of Life (MindTap Course List)

14th Edition

ISBN:9781305073951

Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Publisher:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr

Chapter13: Observing Patterns In Inherited Traits

Section: Chapter Questions

Problem 7GP: Several alleles affect traits of roses, such as plant form and bud shape. Alleles of one gene govern...

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1. Use the following information to answer the question: Parental cross is RrYy x RrYy Seed Shapes are R-round, r-wrinkled Seed colors are Y-yellow, y-green Based on the information given, what is the phenotype ratio of the offspring of this cross? 2. A pea plant heterozygous for height and seed color (TtYy) is crossed with a pea plant heterozygous for height but homozygous recessive for seed color (Ttyy). If 80 offspring are produced, how many are expected to be tall and have yellow seeds? 3. What is the chromosome theory of inheritance? How does this theory explain Mendel's results? 4. A cross between two organisms heterozygous for two different genes (AaBb) results in a 9:3:3:1 phenotype ratio among the offspring. Is the offspring's genotype ratio the same? Explain your answer.…
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2. In a strain of chickens, there are birds with white, black, or blue feathers. In crosses between ten white hens and ten blue roosters, there are 100 offspring: 24 hens with blue feathers, 26 roosters with blue feathers, 23 hens with white feathers, 27 roosters with white feathers. When crossing blue hens and white roosters, there are 100 offspring: 25 hens with blue feathers, 25 roosters with blue feathers, 26 hens with white feathers, 24 roosters with white feathers. A. Using allele symbols, create a plausible explanation for these traits. Why is this trait not sex-linked? When crossing ten black roosters and ten white hens, you observe 100 offspring: 51 hens with blue feathers, 49 roosters with blue feathers. When crossing white roosters and black hens, you observe 100 offspring: 50 hens with blue feathers, 50 roosters with blue feathers B. Use allele symbols to create a plausible explanation for these traits. C. Using evidence of all crosses, what would you predict if you…
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2. Three different pure-breeding strains of corn that produce ears with white kernels were crossed to eachother. In each case, the F1 plants were all red, whileboth red and white kernels were observed in the F2generation in a 9:7 ratio. These results are summarized in the following table.F1 F2white-1 × white-2 red 9 red : 7 whitewhite-1 × white-3 red 9 red : 7 whitewhite-2 × white-3 red 9 red : 7 whitea. How many genes are involved in determiningkernel color in these three strains?b. Define your symbols and show the genotypes for thepure-breeding strains white-1, white-2, and white-3.c. Diagram the cross between white-1 and white-2,showing the genotypes and phenotypes of the F1and F2 progeny. Explain the observed 9:7 ratio.
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