Pre-Vet & Equine Science
Meiosis Study Guide
Meiosis: Complete the following on a separate piece of paper. Be sure to cite any
answers that you get directly from a book or website.
1. What is meiosis?
2. What type of cell undergoes meiosis?
3. Meiosis produces ___________________ reproductive cells called
____________________.
4. Name the 2 human gametes & tell their chromosome number.
5. What is the chromosome number for humans?
6. The fusion of a _________________ and an _____________ produces a
________________ with 46 (2n) chromosome number.
7. Cells starting mitosis & meiosis begin with a ____________________ set of
chromosomes.
8. How many times do cells divide during meiosis?
9. What are the stages of meiosis called?
10. Explain what happens during Meiosis I to each of these structures:
a. chromosomes?
b. spindle?
c. nucleus?
d. nucleolus?
11. What is synapsis & when does it occur?
12. Draw a cell during anaphase I and explain what is occurring.
13. Name 2 things that occur during Telophase I.
14. How many cells are formed at the end of Meiosis I & how many copies of
chromosomes does each cell have?
15. How many cells form at the end of Meiosis II and how many chromosomes do they
contain?
16. In humans, meiosis occurs in the ___________________ and in the
__________________
producing cells called ________________________.
17. Define spermatogenesis & tell where it occurs.
18. Sketch spermatogenesis.
19. What are spermatids & how many form from meiosis?
20. Define oogenesis & tell where it occurs.
21. Sketch oogenesis
22. Mature egg cells are called ___________________.
23. Explain how only one egg cell is formed instead of four from meiosis.
24. What are the 3 other products of meiosis called?
25. Define asexual reproduction.
26. Name 2 types of asexual reproduction.
27. Name a type of asexual reproduction in unicellular organisms.
28. How do the offspring of asexual reproduction compare to their parents?
29. Define sexual reproduction.
30. How do offspring from sexual reproduction compare to their parents?
31. Is there ever a case in sexual reproduction where offspring can be genetically alike?
Explain.
32. What is the evolutionary advantage of sexual reproduction?