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miya123 miya123
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6 years ago
A couple wishes to determine the chances of having a blue-eyed baby. Both parents have brown eyes, but have heterozygous gene pairs for eye color. Calculate the odds of their having a child with blue eyes.
 
  A.
  10
  B.
  20
  C.
  25
  D.
  50
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wrote...
6 years ago
ANS: C
Each parent has a heterozygous gene pair for brown eyes, which means that each parent has one blue gene and one brown gene. Using a Punnett square, one can calculate the odds of their having a blue-eyed baby to be 25.
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