A couple finds out that they are both carriers of a recessive gene that causes cystic fibrosis. The probability of a chi

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A couple finds out that they are both carriers of a recessive gene that causes cystic fibrosis. The probability of a chi

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A couple finds out that they are both carriers of a recessive
gene that causes cystic fibrosis. The probability of a child born
to this couple having cystic fibrosis is 1 out of 4. If the couple
has four children, what is the probability that none of the
children will have cystic fibrosis?
a. 22.10%
b. 75.00%
c. 52.40%
d. 31.60%
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