Crested ducks are heterozygous for the A gene, which, when homozygous, causes embryonic death. The recessive allele

Crested ducks are heterozygous for the A gene, which, when homozygous, causes embryonic death. The recessive allele of this gene determines the normal development of the trait. When crested ducks are crossed among themselves, ducklings hatch only from 3/4 of the eggs, and 1/4 die before hatching. Among the hatched ducklings, about 2/3 are crested and 1/3 are normal. What will be the offspring from crossing crested ducks with normal ones?

1/2 crested, 1/2 normal.

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