The inheritance of colour in domestic pigeons involves several genes. The dominance hierarchy of three colour alleles is ash-red > blue-black > brown (ZA > ZB > Zb ). These colours are carried on the Z sex chromosome.  Unlike humans, female pigeons have two different sex chromosomes (Z and W) and males have two of the same kind of sex chromosome (ZZ). An ash-red male pigeon mated with a blue-black female pigeon. Is it possible to obtain a brown male pigeon? Answer (choose one from the picture ).

Human Biology (MindTap Course List)
11th Edition
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cecie Starr, Beverly McMillan
Chapter19: Introduction To Genetics
Section: Chapter Questions
Problem 11CT: You decide to breed a pair of guinea pigs, one black and one white. In guinea pigs, black fur is...
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The inheritance of colour in domestic pigeons involves several genes. The dominance hierarchy of three colour alleles is ash-red > blue-black > brown (ZA > ZB > Zb ).

These colours are carried on the Z sex chromosome.  Unlike humans, female pigeons have two different sex chromosomes (Z and W) and males have two of the same kind of sex chromosome (ZZ).

An ash-red male pigeon mated with a blue-black female pigeon.

Is it possible to obtain a brown male pigeon? Answer (choose one from the picture ).

Yes, if the ash-red male pigeon is heterozygous with a brown allele.
Yes, if the ash-red male pigeon is heterozygous with a blue-black allele.
Yes, if the blue-black female pigeon is heterozygous with a brown allele.
Yes, if the blue-black female pigeon is heterozygous with a blue-black allele.
No.
Transcribed Image Text:Yes, if the ash-red male pigeon is heterozygous with a brown allele. Yes, if the ash-red male pigeon is heterozygous with a blue-black allele. Yes, if the blue-black female pigeon is heterozygous with a brown allele. Yes, if the blue-black female pigeon is heterozygous with a blue-black allele. No.
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