Polydactyly (six-fingered) in humans is inherited as a dominant trait. The mother is six-fingered, the father and son are five-fingered.

Polydactyly (six-fingered) in humans is inherited as a dominant trait. The mother is six-fingered, the father and son are five-fingered. What is the probability of birth in this family: 1) one more five-toed child; 2) a six-toed child?

1) The probability of having a five-toed child is 50%;
2) the probability of having a six-toed child is 50%.

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