GENETICS

posted by Dan

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?

  1. PsyDAG

    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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