1. Suppose a married man and woman both carry the gene for cystic fibrosis but don't have the disease themselves. According

Question

1. Suppose a married man and woman both carry the gene for cystic fibrosis but don’t
have the disease themselves. According to the laws of genetics, the probability that
any child they have will develop cystic fibrosis is .25.
a) Explain what this probability means.

b) If the couple has 4 children, is one of them guaranteed to have cystic fibrosis.

minhkhoi · Answer

Answer:   a) Probability is the chance or possibility that an event will occur.     b) No,  just as the question states there is a 25% chance of this event happening in a child, so no matter the number of children they have the chances of them getting cystic fibrosis is 25% for each child and it's never guaranteed.

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