Test for Reproduction

1. Test for Reproduction Study!!!!!!!!

2. If an organism’s diploid number is 12, its haploid number is • 12 • 24 • 6 • 3

3. Unlike mitosis, meiosis results in the formation of • two genetically identical diploid cells. • four genetically different haploid cells • . • four genetically identical haploid cells. • two genetically different diploid cells.

4. What is shown here? independent assortment crossing-over anaphase I of meiosis incomplete dominance

5. Linked genes • are never separated. • assort independently. • are on the same chromosome. • are always recessive.

6. Human females produce egg cells that have • one X chromosome. • one X or one Y chromosome. • two X chromosomes. • one X and one Y chromosome.

7. The testes and the ovaries do not begin making active reproductive cells until • birth. • gastrulation. • fertilization. • puberty.

8. Puberty usually begins between the ages of • 5 and 8. • 16 and 19. • 9 and 15. • 20 and 25.

9. One menstrual cycle usually lasts about a • day. • month. • week. • year.

10. Where does fertilization typically occur? Give the letter of the structure in Figure 39-3.

11. Which organ system is responsible for making and delivering sperm? • female reproductive system • nervous system • endocrine system • male reproductive system

12. Which of the following forms during gastrulation? • Endoderm • Mesoderm • Ectoderm • all of the above

13. Which stage of the human life cycle occurs first? • Puberty • Adolescence • Adulthood • childhood

14. In which organ does gastrulation occur? • Penis • Uterus • Ovary • vagina

15. Which body systems do Diagrams I and II in Figure 39-3 show?

16. ____________________ is a period of rapid growth and sexual maturation during which the reproductive system becomes fully functional.

17. Which structure in Figure 39-3 produces sperm? Give both the name and the letter of this structure.

18. The placenta connects the • fetus to the mother’s uterus. • ectoderm to the endoderm. • umbilical cord to the mother’s vagina. • uterus to the cervix.

19. In humans, a male has • one X chromosome only. • two X chromosomes. • one X chromosome and one Y chromosome. • two Y chromosomes.

20. Almost everything that the mother takes into her body passes through the ____________________ to the embryo.

21. Which structure in Figure 39-3 releases eggs? What is this structure called?

22. Graphics Through which structure do sperm exit the male body? Give both the name and the letter of the structure in Figure 39-3.