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3MR 3MR
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6 years ago
A woman carries a recessive gene for sickle cell anemia. If her sexual partner also has this recessive gene, the chance that her first child will develop sickle cell anemia is
 
  A) 1 in 4.
  B) 2 in 4.
  C) 3 in 4.
  D) 0 in 4.
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laneybrown8laneybrown8
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6 years ago
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