A-LevelBiologyInherited changeOct/Nov 2022Paper 4 Q710 Marks
The determination of sex in domestic turkeys is different from that in humans. The sex chromosomes in turkeys are named Z and W. Male turkeys are ZZ and female turkeys are ZW. The gene for feather colour is located only on the Z chromosome. • The dominant allele codes for bronze feathers. • The recessive allele codes for brown feathers.
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