2. In cats, yellow coat color is due to a gene, b, and black coat color is due to its allele, B. The alleles b and B are sex-linked (i.e. are located on the X chromosome). Because of Barr body formation, the heterozygous condition results in tortoise shell colored cats (both black and yellow patches). a) What kinds of offspring would be expected from the mating of a black male with a yellow female? b) Of a yellow male with a tortoise female?

2. In cats, yellow coat color is due to a gene, b, and black coat color is due to its allele, B. The alleles b and B are sex-linked (i.e. are located on the X chromosome). Because of Barr body formation, the heterozygous condition results in tortoise shell colored cats (both black and yellow patches). a) What kinds of offspring would be expected from the mating of a black male with a yellow female? b) Of a yellow male with a tortoise female?

Name: 2. In cats, yellow coat color is due to a gene, b, and black coat col
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Description: 2. In cats, yellow coat color is due to a gene, b, and black coat color is due to its allele, B. The alleles band B are sex-linked (i.e. are located on the X chromosome). Because of Barr body formation, theheterozygous condition results in tortoise

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter14: Human Inheritance

Section: Chapter Questions

Problem 2GP: Human females have two X chromosomes XX; males have one X and one Y chromosome XY. a. With respect...

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7) In cats, the gene for coat color is both X-linked and incompletely dominant. There are black coat and yellow coat alleles, with calico (tortoise shell) as the heterozygous form. If a yellow male mates with a calico female, what are the expected offspring phenotypes (in percent)? hbit
3. A man who has polydactyly and normal vision marries a color-blind woman with a normal number of hand and foot digits. The man's father has normal hand and foot digitation, and both the woman's parents have normal hand and foot digitation. A) Polydactyly is autosomal dominant, which means [ Select ] the gene is carried on the X chromosome b. the gene is carried on a non-sex chromosome a. c. the gene is carried on the Y chromosome d. the dominant allele is actually recessive B) Red-green color blindness is X-linked recessive, which means that in females, [ Select ] a. the recessive allele is actually dominant b. the gene is carried on a non-sex chromosome c. the gene must have both recessive alleles to be expressed in the phenotype d. the gene is carried on the Y chromosome C) What proportion of their sons would be color blind and polydactyly? [ Select ] a. half b. none C. one out of four d. all D) What proportion of their daughters would be color blind and polydactyly? [ Select ] а.…
15.Hemophilia is a sex-linked recessive condition that results in deficient blood clotting. The disease causes excessive bleeding which occurs spontaneously or upon slight injury. In dogs (as in humans) hemophilia is caused by a defect in a gene on the X chromosome. What will be the results of mating between a normal, noncarrier female dog and a male dog with hemophilia? All of the offspring will be normal, but all females will be carriers. B. All female offspring will be normal and half the male offspring will have hemophilia. C. Half the male offspring will be normal and half will have hemophilia; all females will be carriers. D. Half the female offspring will have hemophilia and half will be carriers, all male offspring will be normal.
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13. A dominant x-linked allele (B) gives normal color vision but the recessive allele (b) causes red-green color blindness.A. What is the genotype of a man with normal color vision whose father was color- blind? B. What is the genotype of a woman with normal color vision whose father was color-blind? C. If a woman who is colorblind marries a man with normal vision, what would you expect for the genotypes and phenotypes of their children? D. If a man is color-blind, which parent did he inherit the gene from? Explain your answer. E. Which parent does a man get all his x-linked genes from? F. If a woman is color-blind, what do you know about the genotypes and phenotypes of her parents? G. Are men more likely than women to get a genetic disease which is x-linked and dominant? Are they more likely to get a disease that is x-linked and recessive? Explain your answers. H. Can a man with normal color vision have a colorblind daughter? Explain your answer.…
1. How many different types of gametes can be produced by an individual with the genotype Yy Ww Pp ee Bb? 2. If an individual with the genotype Yy Ww Pp ee Bb is crossed with another individual with the same genotype, what proportion of offspring will be homozygous recessive at all genes? 3. If an individual with genotype Yy Ww Pp ee Bb is crossed with an individual with the same genotype, what proportion of offspring will have the dominant phenotype for the four heterozygous loci?
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