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Bob is heterozygous for a (dominant) widow's peak hairline and Loretta is homozygous recessive for a (recessive) straight hairline. What is the probability that their first…

Bob is heterozygous for a (dominant) widow's peak hairline and Loretta is homozygous recessive for a (recessive) straight hairline. What is the probability that their first…
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Bob is heterozygous for a (dominant) widow's peak hairline and Loretta is homozygous recessive for a (recessive) straight hairline. What is the probability that their first child will have a widow's peak hairline?

User Celaeno
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The probability that their first child will have a widow's peak hairline is 100%. This is proven because in the punnet square in this situation, all outcomes turn out to be dominant for the widow's peak.
User Heilala
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