Cell Reproduction: Topic 2
Chromosomes and Meiosis
Types of Cells in Your Body
1. The cells that make up body tissue and organs are called __________ cells or
_______________________cells.
2. The purpose of germ cells is to make _____________________.
3. Where can germ cells be found?
4. Another name for sex cells is _____________________.
5. What is the female gamete? Male gamete?
6. What do gametes pass to offspring?
Chromosomes
7. Every species has a certain number of ______________________ per cell.
8. True or False. The more chromosomes a species has, the more intelligent it is.
9. How many pairs of chromosomes does a human have?
10. Chromosome pairs 1-22 are called ________________ and pair#23 is called
_________________.
11. Why are the sex chromosomes important?
12. Homologous chromosomes are 2 chromosomes, 1 from ____________ and 1
from ___________ that have the same ___________________ and appearance.
13. How are the 23 homologous pairs arranged?
Diploid and Haploid Cells
14. Diploid cells are your _______________ cells. They have ____ copies of each
chromosomes. One is from __________ and one is from _____________. The diploid
number can be represented by the symbol ________. Humans have a diploid number of
______.
15. Haploid cells are the ____________ or egg and ______. They have ____ copy of
every chromosome. The haploid number can be represented by the symbol _____.
16. Gametes have _____pairs of autosomes and _____ pair of sex chromosomes.
Meiosis
17. Meiosis is the formation of __________________.
18. The purpose of meiosis is to ______________ chromosome number and create
_______________ diversity.
19. Meiosis divides ____________ cells into _____________ cells.
20. The production of gametes is called _________________
21. The formation of sperm is called ______________.
22. Sperm are much ______ than eggs.
23. How many sperm are produced from each division?
24. When does a male start and stop making sperm?
25. _____________________ is the formation of ________________ or ova.
26. During oogenesis, _____egg and ____polar bodies are produced.
27. All eggs are present at __________.
Mitosis
Meiosis
Produces genetically _______
cells
Produces genetically
___________ cells
Results in ___________ cells
Results in _____________ cells
(Humans-_______ chromosomes) (Humans-__________
chromosomes)
Takes place throughout an
Takes place only at certain times
organism's __________________ in an organism's ____________
Involved in ____________
reproduction
Table 1- Mitosis vs. Meiosis
Involved in _____________
reproduction