SEX DETERMINATION

1
SEX DETERMINATION
2
MECHANISM

• CHROMOSOMAL
• GENEIC BALANCE
• MOLECULAR

3
CHROMOSOMAL

• XX-XY HETEROGAMETIC MALE
• XX-XO --- ?
• ZZ- ZW HETEROGAMETIC FEMALE
• ZZ- ZO -- ?

4
(No Transcript)
5
(No Transcript)
6
WHAT IS SEX CHROMATIN
7
BARR BODY

• A TEST FOR INTERNATIONAL SORTS.

8
SEX REVERSAL

• SXr GENE
• HORMONES
• PIE BALD VD BALD
• BEWARE OF ?????????

9
GENIC BALANCE

• 1
• .5
• SUPER FEMALE
• META FEMALE
• HAVE YOU EVER HEARD ABT SUPERMAN.

10
MOLECULAR BASIS

• MASTER GENE SX1
• HOMEO GENE
• Tra AND Tra 2
• MECHANISM

11

• XX- XY SEX CHROMOSOMES OR ALLOSOMES
• WHICH IS THE REAL CHROMOSOME ?

12
EFFECT OF ENVIRONMENT

• Bonelia viridis

13

• Snakes
• Crocodiles
• HS Genes

14
Prenatal diagnosis

• FISH
• Gene card
• Blueprint baby

15

• WHICH IS THE SUPERIOR SEX ?
• MALE OR FEMALE

16
ABNORMALITIES OF SEX CHROMOSOMES

• TURNOR SYNDROME
• KLINEFELTER SYNDROME
• XYY SYNDROME
• GYNADROMORHS

17
THE THIRD SEX
18
(No Transcript)