Topic 14 Flashcards
1
Q
sex ratio
A
differs at different stages of life
the prosentage of male to females
2
Q
primary sex ratio
A
CONCEPTION
chromosomal only F XX, M XY
50:50 normally
3
Q
secondary sex ratio
A
HATCHING or BIRTH
Affect bodily phenotype, outside gonads
Male: penis, seminal vesicles, prostate
Female: vagina, uterus, cervix, oviducts, mammary glands
4
Q
Tertiary
A
juveniles External characteristics (rooster: comb, etc)
5
Q
quaternary
A
adults
external characteristics
6
Q
sex ratio later in life
A
more prom at later stages, a sign skew comp to the 50:50 at conception
