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Math Asked by a SnapAndSolve user · about 2 hours ago

What is the probability that a color-blind woman who marries a man with normal vision will have a...

What is the probability that a color-blind woman who marries a man with normal vision will have a color-blind child?

Answer

Color blindness is an X-linked recessive trait. A color-blind woman has the genotype XcXc, and a man with normal vision has the genotype XY. The possible offspring are:

  1. Female: XcX (carrier, not color-blind)
  2. Female: XcX (carrier, not color-blind)
  3. Male: XcY (color-blind)
  4. Male: XcY (color-blind)

The probability of having a color-blind child is 50% (both male offspring are color-blind).

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