Expert: Dana Krempels, Ph.D. - 7/10/2007

Question
A man and woman both have normal color vision, they have two children, a son with normal vision and a daughter which has red-green color blindness, a sex-linked (to the X-chromosome recessive gene. The man sues his wife for divorce on grounds of infidelity. If you were his attorney, could you use the evidence in your case? EXPLAIN!

p.s. my answer to this question is
Yes, in order for the daughter to be colorblind, both parents must contribute the recessive X-linked colorblind gene to her.Since her “father” is not color blind, he can only pass on the “normal” gene for color vision to all of his daughters.However, the wife could have normal vision, but carry the recessive gene for colorblindness.If she “mates” with a colorblind male, then it is possible for this daughter to have colorblindness.

PLEASE CORRECT ME IF MY ANSWER IS WRONG. Also, may I please ask you to send me your answer via e-mail.

Thank you kindly,
Farduus

Answer
Dear Farduus,

Your answer is absolutely correct!  :)

I cannot send you an answer via email because your email address does not appear on this site.  But I believe that AllExperts will send this response to your email address.  I hope you receive it with no problems.

Good luck with your class!  :)

Dana