Homework Help: GENETICS

Posted by Dan on Sunday, October 28, 2007 at 11:38pm.

With regard to pattern baldness in humans (a sex-influenced trait) a woman who is not bacld but mother is bald, has children with a bald man whose father is not bald. what are their probabilities of having the following types of families?
a) their first child will not become bald?
b)their first child be a male who will not be bald?
c)their first three children will be nonbald females?

GENETICS - PsyDAG, Monday, October 29, 2007 at 11:00am
Since this is not my area of expertise, I searched Google under the key words "pattern baldness inheritance" to get these possible sources:

http://www.medscape.com/viewarticle/410576
http://www.androgeneticalopecia.com/hair-loss-biology/hair-loss-genetics-men-women.shtml
http://waynesword.palomar.edu/colorbl1.htm
http://en.wikipedia.org/wiki/Androgenetic_alopecia
http://ghr.nlm.nih.gov/condition=androgeneticalopecia

Using the Punnett square, you can determine the answers to the first two. For C, it will be the probability for nonbald females cubed.

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search.

I hope this helps. Thanks for asking.

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