Sex Linked Genes Flashcards
1
Q
What are sex-linked genes?
A
Gene on a sex chromosome
2
Q
What are X-linked genes?
A
Gene on the X chromosome
3
Q
What is the nomenclature for X-linked genes for females?
A
Homozygous or heterozygous
X^A/X^A or A/A
X^A/X^a or A/a
X^a/X^a or a/a
4
Q
What is the nomenclature for X-linked genes for males?
A
Hemizygous
X^A/Y or A/Y
X^a/Y or a/Y
5
Q
How is sex determined in birds?
A
Two Z = male
One Z = female
6
Q
What is dose compensation in birds?
A
One Z increases their gene activity in females
7
Q
What are sex-influenced traits?
A
Phenotypes that differ in males and females but are due to sex hormones and autosomal genes
