What is the homozygous dominant genotype for type of hairline

A “widow’s peak” hairline in humans is coded by the dominant

allele W. A straight hairline is coded by the recessive allele w. A
man with a homozygous dominant WWproduces a zygote with a
woman with a heterozygous dominant Ww for the trait. Which
allele combinations could occur in the zygote?

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