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A single gene in horses determines coat (hide) color. Palomino (‘dove’) horses are heterozygous (Aa), while...

A single gene in horses determines coat (hide) color. Palomino (‘dove’) horses are heterozygous (Aa), while homozygous recessive (aa) are cremello, and homozygous dominant (AA) are chestnut.
A horse rancher buys 80 palomino horses and 20 cremello horses and lets them breed free.
(a) What are frequencies of alleles and genotypes in THIS (parent) generation? Are all genotypes represented?
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