Problem 3 In the Holstein Friesian breed of dairy cattle, a recessive allele r is known to produce red and white offspring. The dominant allele R is known to produce black and white offspring. If a carrier bull is mated to carrier cows, what proportion of the black and white (RR and Rr) and red and white (r) offspring is produced?

Problem 3 In the Holstein Friesian breed of dairy cattle, a recessive allele r is known to produce red and white offspring. The dominant allele R is known to produce black and white offspring. If a carrier bull is mated to carrier cows, what proportion of the black and white (RR and Rr) and red and white (r) offspring is produced?

Name: Problem 3In the Holstein Friesian breed of dairy cattle, a recessive
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Description: Problem 3In the Holstein Friesian breed of dairy cattle, a recessive allele r is known to produce red and whiteoffspring. The dominant allele R is known to produce black and white offspring. If a carrier bullis mated to carrier cows, what proportion

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 9GP: In sweet pea plants, an allele for purple flowers. (P) is dominanl when paired with a recessive...

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Background Problem N° 6 Objective: To illustrate the differences between the dominant/recessive model vs. partial (or incomplete) dominance model. In incomplete dominance, the phenotype is neither dominant nor recessive, but intermediate instead. a. Explain why a monohybrid cross of snapdragon plants carrying white flowers with red-flowered plants produces all pink flowers in the F1 generation. [Hint: What makes flowers red, purple, yellow, etc.?] b. What are the genotypic and phenotypic ratios of snapdragon flowers in the F2 generation? True breeding individual = Homozygous for either trait.
PROBLEM 3: Using the Punnett square, determine the different combination of gametes with the genotypes G9MM (paternal) and ggmm (maternal). G is dominant for having a widows peak and g is recessive for not having a widow's peak. M is dominant for having the ability to roll the tongque and m is recessive for not having the ability to roll the tongue. Determine the following: a. What are the offsprings phenotype: b. What are the offsprings genotype: c. Probability of widow's peak and can tongue roll d. Probability of offspring with no widow's peak but can roll its tonque e. PUNNETT SQUARE
Dihybrid Cross Problem 1: Predicting combinations of alleles in gametes of plants heterozygous for two traits. A pea plant is heterozygous for both seed shape and seed color. S is the allele for the dominant, spherical shape characteristic; s is the allele for the recessive, dented shape characteristic. Y is the allele for the dominant, yellow color characteristic; y is the allele for the recessive, green color characteristic. What will be the distribution of these two alleles in this plant's gametes? A. 50% of gametes are Sy: 50% of gametes are sY B. 25% of gametes are SY; 25% of gametes are Sy: 25% of gametes are sY; 25% of gametes are sy. C. 50% of gametes are sy: 50% of gametes are SY D. 100% of the gametes are SsYy E. 50% of gametes are SsYy: 50% of gametes are SSYY.
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Problem 3: In snapdragons, the inheritance of flower color and size of leaves are examples of Incomplete Dominance. When red flowered plants are crossed with white, the offspring have pink flowers. Similarly, when a plant with broad leaves is crossed with plants having narrow leaves, the offspring have intermediate leaves. Regarding a cross between a homozygous red-flowered, broad- leaved plant with a homozygous white-flowered, narrow-leaved plant. What are the phenotypes and their ratio in the F1 generation? Construct a Punnett square. What are the phenotypes and their ratio in the F2 generation? Construct a Punnett square.
Problem 2: In summer squash, white fruit is dominant to yellow, and flat fruit is dominant to round. The selected parents are a plant with white-flat fruit (homozygous) and a plant with yellow-round fruit. Carry this cross through the F₂ generation. List phenotypic ratio for the F, generation. Problem 3: Persian cats have the dominant gene for black coat and the recessive gene for long hair. Siamese cats have the recessive gene for tan coat and the dominant gene for short hair. A pure-breeding black, long hair Persian cat is mated with a pure-breeding tan, short hair Siamese. Calculate the F, and F₂ generations. List the phenotypic ratio for the F₂ generation. Show your calculations in the space below.
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Problem #4 In some plants, having brown seeds (B) is dominant to having white seeds (b). What are the genotype and phenotype ratios that would be expected from a cross between an individual that is homozygous for brown seeds and one that has white seeds? P Genotypic Ratio: Phenotypic Ratio:
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Problem 2: In horses, black coats and trotting gait are dominant while the recessive alleles are white and pacing gait. If the male is homozygous for both dominant traits, what is the genotype of the male? Regarding a cross between the homozygous male with the homozygous recessive female. What are the phenotypes and their ratio in the F1 and F2 generations?