Assume that Emily (who has CF,a recessive disease (aa))decides to have children with a man who does not have CF and who has no family history of CF.What combination of gametes can each of them produce,and what is the probability that they will have a child who is a carrier for CF?

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Emily, having cystic fibrosis (CF), must have the genotype aa (recessive). A man without CF and no family history likely has the genotype AA (dominant). Emily can only produce gametes with the allele a, and the man can only produce gametes with the allele A. Therefore, all their children will inherit an A from the father and an a from Emily, making them carriers (Aa) with a 100% probability.

Assume That Emily (Who Has CF,a Recessive Disease (Aa))decides to Have