16. The gene for color-blindness is on the X chromosome. Men have one X chromosome (and a Y). Women have two X chromosomes. A class tested a large number of students for color-blindness and found that, on average, one male will be color-blind in a class of 30. Assuming that such a class is 1/2 male and 1/2 female, how many women would have to tested before one color-blind woman is found.

Biochemistry
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Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
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Chapter1: Biochemistry: An Evolving Science
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I am stuck on # 16 please help
b. What was the frequency of the D and d alleles of my colony after the new gerbils were added?
Frequency of "D" allele is 0.25 and frequency of "d" allele is 0.75.
16. The gene for color-blindness is on the X chromosome. Men have one X chromosome (and a Y). Women have two X
chromosomes. A class tested a large number of students for color-blindness and found that, on average, one male will
be color-blind in a class of 30. Assuming that such a class is 1/2 male and 1/2 female, how many women would have to
tested before one color-blind woman is found.
17. Many cattle breeders obtain bulls of one breed to sire calves with cows of another breed. One of the most common
crosses is black angus bulls with hereford cows. Purebred herefords all have a white face that is caused by a dominant
allele. As a result of being inbred you can assume that they are all homozygous. Purebred black angus never have a
white face. What percentage of the offspring in such a herd will have a white face?
wwwwww
Pure Hereford cow:- white face [dominant allele]. Ww
Black angus bull:-totally black body and black face; it is again a dominant allele BB
Activate Windows
Go to Settings to activate W
the allelic combination of white face cow is WWbb
Transcribed Image Text:b. What was the frequency of the D and d alleles of my colony after the new gerbils were added? Frequency of "D" allele is 0.25 and frequency of "d" allele is 0.75. 16. The gene for color-blindness is on the X chromosome. Men have one X chromosome (and a Y). Women have two X chromosomes. A class tested a large number of students for color-blindness and found that, on average, one male will be color-blind in a class of 30. Assuming that such a class is 1/2 male and 1/2 female, how many women would have to tested before one color-blind woman is found. 17. Many cattle breeders obtain bulls of one breed to sire calves with cows of another breed. One of the most common crosses is black angus bulls with hereford cows. Purebred herefords all have a white face that is caused by a dominant allele. As a result of being inbred you can assume that they are all homozygous. Purebred black angus never have a white face. What percentage of the offspring in such a herd will have a white face? wwwwww Pure Hereford cow:- white face [dominant allele]. Ww Black angus bull:-totally black body and black face; it is again a dominant allele BB Activate Windows Go to Settings to activate W the allelic combination of white face cow is WWbb
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