Question

Help with genetics? Medal and fan awarded!

Color blindness is a recessive sex-linked trait. If a color blind man and a carrier woman have children, what are the chances their sons will be color blind?

Include:
A. Genotypes of p1
B. Possible genotypes and phenotypes of f1
C. Chance in percent that a son will be color blind.

I am so confused!

Answer 1

rcessive sex linked trait means it will present on x chromosome

Answer 2

XX with one X carrying colorblindness and the male has XY with both carrying colorblindness?

Answer 3

male has only one x chromosomes on x chromosome colour blind will be

Answer 4

did women also have colour blindness?

Answer 5

No. The woman is just a carrier.

Answer 6

ok x`y-male and gametes are x` and y and female is xx and gametes are x

Answer 7

Okay....

Answer 8

did u gt the answer

Answer 9

Tell me if I'm wrong, but from your explanation:
The Genotypes of p1 are x'y and x'x.
The possible genotypes and phenotypes of f1 are x'x', x'x, x'y and xy so colorblind girl, carrier girl, colorblind boy, noncolorblind boy
And the chance in percent that a son will be color blind is 1/4 or 25%

Answer 10

Correct?

Answer 11

correct

Answer 12

Fantastic. Thank you so much for your help!

Answer 13

no prblm :-)