1. Animal Reproduction
Chapter 46

2. Goals: Big Idea #1: Evolution
Big Ideas #2 & 4: Organization of the human reproductive system:
Organ /Organ system level
Cellular level
Homeostasis and Feedback

3. Do all animals reproduce sexually?
All animals have a sexual life cycle.
Is sex an advantage in good times or bad?
Individual animals may reproduce asexually
Red Queen Hypothesis
Hydra (Mastering Biology Video Clip)

4. Regulation of hermaphrodites
What might be altering gene regulation?

5. Red Queen Hypothesis

6. Female Reproductive System
46.4 Activity on Mastering Biology
Know major tissues
Role of fallopian tubes in fertilization
Critical thinking: Why do fertility rates rise and fall during the menstral cycle?

7. Male Reproductive System
Mastering Biology:
Know major tissues
Role of the testis and structure meets function
Critical thinking: Why does a vasectomy drastically reduce the chance of fertility?

8. Spermatogenesis

9. Oogenesis

10. Hormonal Regulation of Reproduction
STEROID HORMONES
Differentiate males and females:
Estrogen & Testosterone
PROTEIN HORMONES
Same structure; different targets in M & F:
GnRH
FSH LH

11. Male Regulation
How would anabolic steroids affect negative feedback?

12. Female Regulation
How does hormonal supplementation with estrogen and progesterone act as birth control?

13. Combining of male and female gametes
How is apoptosis activated to prevent double fertiization?

14. Regulation of Birth and Milk Production
What type of feedback is this?
Why is this type of feedback useful?
How could this system be used to induce labor?

15. Biotechnology
Discussion: In what ways is biotechnology introducing a “Brave New World” of Reproduction?
What are the ethical implications?

16. Formative Assessment
How does the organization of either the male or female reproductive system aid in its function?
How is reproduction regulated and how can this regulation be affected?
Is sex always an advantage? When might it not be an advantage for an animal to reproduce sexually?