Biology: Life on Earth
10th Edition
ISBN: 9780321729712
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: Benjamin Cummings
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Chapter 10, Problem 1GP
In certain cattle, hair color can be red (homozygous R1R1), white (homozygous R2R2), or roan (a mixture of red and white hairs, heterozygous R1R2).
a. When a red bull is mated to a white cow, what genotypes and
b. If one of the offspring bulls in part (a) were mated to a white cow, what genotypes and phenotypes of offspring could be produced? In what proportion?
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During breeding season, lizards attract mates by bobbing their heads and displaying colorful throat patches. The genes for these traits are on different chromosomes. Fast bobbing heads (F) and red throat patches (R) are dominant to slow bobbing heads and yellow patches.
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Chapter 10 Solutions
Biology: Life on Earth
Ch. 10 - Fill-in-the-Blank The physical position of a gene...Ch. 10 - Define nondisjunction, and describe common...Ch. 10 - In certain cattle, hair color can be red...Ch. 10 - Prob. 2GPCh. 10 - In the edible pea, tall (T) is dominant to short...Ch. 10 - In tomatoes, round fruit (R) is dominant to long...Ch. 10 - In the tomatoes of Problem 4, an F1 offspring...Ch. 10 - Prob. 6GPCh. 10 - In humans, one of the genes determining color...Ch. 10 - In the couple described in Problem 7, the woman...
Ch. 10 - An organism is described as Rr, with red coloring....Ch. 10 - 2. The inheritance of multiple traits depends on...Ch. 10 - Fill-in-the-Blank Many organisms, including...Ch. 10 - 4. Genes that are present on one sex chromosome...Ch. 10 - 5. When the phenotype of heterozygotes is...Ch. 10 - 1. Define the following terms: gene, allele,...Ch. 10 - 2. Explain why genes located on the same...Ch. 10 - 3. Define polygenic inheritance. Why does...Ch. 10 - What is sex linkage? In mammals, which sex would...Ch. 10 - What is the difference between a phenotype and a...Ch. 10 - 6. In the pedigree of part (a) of Figure 11–22, do...Ch. 10 - Sometimes the term gene is used rather casually....Ch. 10 - In an alternate universe, all the genes in all...Ch. 10 - Prob. 3AC
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- Black eye (B) is dominant over brown eye (b). A man that is a homozygous dominant black-eyed marries a woman that is a heterozygous black-eyed. The offspring resulted to 50% homozygous black and 50% heterozygous black. If one of their heterozygous children marries another heterozygous partner. Regardless of its gender, what are the genotypes of their children? a. 25% BB, 50% Bb, 25% bb b. 50% BB, 25% Bb, 25% bb c. 25% BB, 25% Bb, 50% bb d. 0% BB, 75% Bb, 25% bb In Law of Codominance, a pure line dominant trait crossed with a recessive trait will result to the appearance of both dominant and recessive trait in the offspring. What is the percentage of having a red-haired offspring if the parental genotype is both a heterozygous roan haired? Red hair is a dominant trait and white hair is a recessive trait. a. 100% b. 75% c. 50% d. 25% e. 0%arrow_forwardIn dogs, a dominant gene (I) determines white coat, and a recessive gene (i) gives colored coat. In the presence of ii the coat color is black due to the dominant gene B, or brown due to the recessive gene b. Two dogs both having the Bbli genotype were mated. Answer the following questions and show complete solutions to support your answers. Use the branching method whenever applicable.a. What is the phenotypic ratio of the offspring?b. What type of gene interaction is exhibited by the coat color in dogs?c. What would be the probability of getting dogs that are pure-breeding for a black coat color?arrow_forwardTwo goats are mated together. One is tall and brown and of unknown genotype. The other is a short white goat. Assuming that tall (T) is dominant to short (t) and Brown (B) is dominant to white(b), what is the probability that they will produce a short, white offspring?arrow_forward
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