lecture 7-2 Flashcards
1
Q
sex-limited inheritance
A
the expression of a specific phenotype is absolutely limited to one sex
2
Q
sex-influenced inheritance
A
sex of the individual influences the expression of a phenotype, but it is not limited to a specific sex
3
Q
where are sex-influenced genes located?
A
not on X or Y chromosomes)
4
Q
what causes sex-limited feathers in chickens ?
A
autosomal genes
5
Q
what is hen feathering controlled by?
A
a dominant allele expressed in both sexes
6
Q
what is male feathering controlled by?
A
a recessive allele only expressed in males
7
Q
what is actual expression of feather type modified by?
A
sex hormones
8
Q
how does male pattern baldness behave?
A
B allele behaves dominant in males, but recessive in females
9
Q
what is an X-linked recessive trait in drosophila ?
A
the white mutation
