Topic 15 Flashcards
1
Q
sex linkage
A
phenotypic expression of allele linked to the chromosomal sex of an induvidual
gene on X/Y/Z gene
ex there are 23 pairs in humans: 22 autosomes and 1 pair of sex chromosomes
2
Q
transmission of traits on the different chromosomes
A
X, Z: transmit many traits
Y: rarely transmit traits
3
Q
X-linked
A
- muscle weakness
- hemophilia (Xh)
- tremor; invol mm. contractions
- nephtritis, inflamm of kidneys
4
Q
Z-linked
A
poultry only
- determine sex AFTER birth
- feather color and growth
(topic 18)