5| SEX DETERMINATION AND SEX CHROMOSOMES Flashcards
(6 cards)
The MSR, male specific region accounts for 95% of the chromosome what two regions does the MSR contain
TDF and SRY
A protein encoded by the SRY gene, responsible for male sex initiation is termed
TDF
Name four ways to sex in humans can be determined
- Aneuplodies
- the Y chromosome is linked to maleness
- PAR regions (autosomal regions in both sexes)
- Primordial Germ: Millerian and wolffian (presence/ absence of Y chromosome is key, bi-potential gonads)
;the reproductive system in humans doesn’t occur until fetal development from an undifferentiated zygote
Homologous regions shared between the X and Y chromosomes that recombine during meiosis are termed as
Pseudo autosomal regions, PAR
Heritable alterations of the X-inactivation center (located on the q arm), can be defined by
Epigenetic inheritance
A protein encoded by a gene in the SRY, triggering testies formation
TDF