15. Sex limited , controlled and linked traits Flashcards
1
Q
Limited by sex
A
encoded by autosomal genes that are expressed in only one sex. Trait has zero penetrance in the other sex.
2
Q
Controlled by sex
A
Sex influenced trait are determined by autosomal genes and are inherited according to mendel’s principle but expressed differently in males & females. trait has higher penetrance in one of the sexes.
3
Q
Sex linked
A
Determined by genes located on the sex chromosome
4
Q
The 3 groups in sex linked
A
Partially , completely and holandric genes
5
Q
Partially sex linked genes
A
located in homologous region of x and y
6
Q
Completely sex linked genes
A
they are located in x chromosome non homologous to y.
7
Q
Holandric genes
A
gene located in Y chromosome non homologous to x chromosome.
