In Chickens, It Is the Females That Have Two Different

question 15

Multiple Choice

In chickens, it is the females that have two different sex chromosomes (Z and W) while the males have two Z chromosomes.A Z-linked gene controls the pattern of the feathers, with the dominant B allele causing the barred pattern and the b allele causing non-barred feathers.From which of the following crosses would all of the daughters be of one type (barred or non-barred) and all of the sons the other type?

• A)barred females * non-barred males
• B)non-barred females * barred males
• C)non-barred females * non-barred males
• D)barred females * barred males
• E)More than one of the choices is correct.