Automatic ten points to punnet saqure help???

Question

A blue eyed woman marries a normal man. If the woman's father was clourblind, what kinds (with respect to colour vision) of children would be expected from the above union?

Like i dnt get the woman genes... does it have ny thng to do with her being blue eyed!

plz hlppp really stuck

Answer 1

So colorblindness has to do with X chromosome..it is passed on by mother. Since, the womens father had colorblindness she got it from the dad for sure (that is 100%)..

So they are asking what portion of the children will be COLORBLIND not blue colored eyes.

So normal Man...
And the women has one bad copy..
there is a 50% chance that the children will be colorblind.

Answer 2

Color blindness is X linked. If the father had it he passed it on to his daughter as a carrier. She is XX' (where X' is the color blind allele)

XX' x XY => XX, XY, X'X, X'Y four possible gamete types but only the X'Y will express the color blindness.

OCA2 is the gene for brown/blue eye pigment & it is found on chromosome 15.