in humans, the allele for a widow�s peak hairline (represented by the letter P) is completely dominant to the allele for no widows peak (represented by the letter p). The three possible parental genotypes are PP, Pp, and pp. There are six possible crosses that can be made between these genotypes (for example, PPxPP, PPxPp, etc.). Show the probabilities of the genotypes and phenotypes in the F1 generation from all six possible crosses. In real human families, would you see offspring in proportions equivalent to these probabilities? Why or why not?


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