1. Reproduction and Gametogenesis

2. Reproduction outline In utero gender determination & differences
Role of sex chromosomes
Barr Bodies
sry gene
Male reproductive structures and function
Hormonal control of spermatogenesis
Female reproductive structures and function
Hormonal control of oogenesis and ovulation
Methods of birth control

3. How it all begins…

5. Will a zygote develop into a male vs female embryo?
It depends upon…

6. Binds to DNA and Gonad Differentiation
Do you have the SRY GENE?
Testis Determination Factor
(protein)
Binds to DNA and Gonad Differentiation

7. Binds to DNA and Gonad Differentiation
FEMALES NO SRY GENE!
I don’t have an SRY gene.
NO!
Testis Determination Factor NO
Binds to DNA and Gonad Differentiation

8. Testosterone and DHT Wolffian ducts change
Epididymis, vas deferns, seminal vesicals!

9. Testosterone and NO DHT
Pseudohermaphrodites

10. Pseudohermaphodite

11. Male Reproduction and Spermatogenesis

12. Testis
epididymis
TESTIS

13. Testis
64 days
12 more days

14. Sertoli Cells and Spermatogeneis
Same as interstitial cells

15. Overview

16. Mature sperm

17. Male Hormonal Control

18. Nerve Control of Erection
200,000,000 sperm!!

20. Onto Female Reproduction