b. What proportion of their children would you expect to be carriers? (0.5 Point
ID: 3166827 • Letter: B
Question
b. What proportion of their children would you expect to be carriers? (0.5 Point) 6) Color Blindness is a sex chromosome linked trait. father was color blind, has a child with a man with normal vision. A woman with normal vision, whose Color Vision alleles: Xnormal color vision allele, X color blindness allele Genotype Phenotype Normal female Normal female carrier for color blind X"X" xcx allele Color blind female Normal male Color blind male XCY What are the genotypes of the woman and man? (0.5 Point) What proportion of their sons are expected to be color blind? Note: This question is only in regards to the sons. Do not include the daughters in your calculations. (0.5 Point) a. b. c. What proportion of their daughters are expected to be carriers? Note: This question is only in regards to the daughters. Do not include the sons in your calculations. (0.5 Point) 7. Albinism is the condition in which the individual has the inability to produce the pigment melanin. It is inherited as an autosomal recessive. A man and a woman, both of whom have one albino parent, are concerned about albinism in their children. What would you tell them about their chances of having an albino child? a chance each child will be albino. (1 point) There is 25% 0% d. a. 100% b. 75% c. 50% e.Explanation / Answer
6. Since the father of the woman was colorblind, this means that the woman is a carrier of this trait.
a. The genotype of the woman is XCXc, and the genotype of the man is XCY
XCXc x XCY
Punnett square analysis:
b. 1/2 proportion their sons is colorblind.
c. 1/2 proportion of their daughter is a carrier.
7. Since both, the man and woman had one albino parent so they are heterozygous for the trait.
Let 'A' be the dominant allele and 'a' be the recessive allele for albino.
Aa x Aa
Punnett square analysis:
So the answer is- d.25%
There is a 25% chance each child will be albino.
XC Xc XC XCXC (normal daughter) XCXc (carrier daughter) Y XCY (normal son) XcY (colorblind son)Related Questions
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