Quote:
NO, NO, NO Females determine gender in Chickens! That is why sex links work the females only have one copy of the Male gene and one Female gene. Males pass on the same gene to ALL off spring.
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The exception is the sex-chromosomes, Z and W, where roosters have two Z chromosomes and hens have only one Z chromosome, plus one W chromosome.
SOOOOO
Since the Roo can only contribute a Z to ALL off spring the hen determines the gender by giving half the offspring Z's to make more roos and half W to make pullets.