bbh22
bbh22
15.07.2019 • 
Biology

Cystic fibrosis is an autosomal recessive disorder that affects lung function in humans. a man and a woman are both unaffected heterozygous carriers of a cystic fibrosis gene. if the couple has two children, what is the probability that their first child will be unaffected and their second child will be unaffected?

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