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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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timmyeddie timmyeddie
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10 years ago
The ability to taste phenylthiocarbamide is an autosomal dominant phenotype, and the inability to taste it is recessive.  If a taster woman marries a non-taster man, what is the probability that their first child/ren will be:  a) a non taster boy    b) fraternal twin boy tasters

What if the taster woman remarries a a taster man with a non-taster daughter.  What is the probability they will have a taster daughter?
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#1
Staff Member
10 years ago
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The ability to taste phenylthiocarbamide is an autosomal dominant phenotype, and the inability to taste it is recessive.  If a taster woman with a nontaster father marries a taster man who, in a previous marriage had a nontaster daughter, what is the probability:

      a. that their first child will be a nontaster girl
 
      b. that their first child will be a taster girl
 
      c. that two out of three children will be nontasters

1/8 (½   x  ¼)
 
3/8 (½  x  ¾)
 
14%
 
 
- Master of Science in Biology
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