Chapter 6 Test: Meiosis and Genetic Variation
Teacher: Mr. Nebbe
3/28/14
1. What process produces gametes?
a. Mitosis
b. Meiosis
2. Where are germ cells found in the human body?
a. In the ovaries and testes
b. In embryos
3. What term describes two chromosomes that always exist as a homologous pair in a cell?
a. Sex chromosomes
b. Autosomes
4. Which of the following cells is haploid?
a. Nerve cell
b. Skin cell
c. Gamete
d. None of the above
5. Gametes are the result of two nuclear divisions.
a. True
b. False
6. The DNA in body cells can be passed on to offspring.
a. True
b. False
7. What are two ways meiosis differs from mitosis (worth 2 points)?
8. In what phase of meiosis are sister chromatids separated?
a. Anaphase 1
b. Anaphase 2
9. In what phase of meiosis are homologous chromosomes separated?
a. Anaphase 1
b. Metaphase 2
c. Prophase 1
10. In what part of meiosis is a germ cell reduced from a diploid number of chromosomes to a haploid
number of chromosomes?
a. Meiosis 2
b. Meiosis 1
11. By the end of meiosis 2, how many daughter cells have been produced?
a. 2
b. 1
c. 4
12. How many eggs form from a female germ cell?
a. 4
b. 2
c. 1
13. What does gametogenesis mean?
a. The production of gametes by mitosis
b. The production of eggs and sperm
14. A human female is born with all of the eggs she is ever going to have in her life.
a. True
b. False
15. What are polar bodies?
a. The cells formed in females during meiosis that are broken down.
b. The cells formed in males during meiosis that are broken down.
c. Organelles in the sperm that help fertilize the egg.
d. None of the above
16. Indicate two things that happen in meiosis 1 which do not happen in meiosis 2 (worth 2 points –
there are two right answers, circle both of them).
a. Homologous chromosomes divide.
b. Sister chromatids divide.
c. Four haploid sex cells are the result.
d. Crossing over occurs.
17. What is true about interphase 2 (the interphase that occurs between meiosis 1 and meiosis 2) that
makes it different from interphase 1 (before meiosis 1)?
a. There is no Gap 1
b. There is no S-Phase (DNA is not duplicated)
c. There is no Gap 2
d. None of the above
18. Which of the following is true about genes that are linked?
a. They are on different chromosomes.
b. They are close together on a chromosome.
c. They will be inherited independently.
19. In what kind of cell does crossing over take place?
a. Germ cell
b. Somatic cell
20. Indicate 2 things that occur during meiosis 1 that are responsible for increasing genetic variation
(worth 2 points, circle two answers).
a. Random fertilization
b. Crossing over
c. Independent assortment
d. Genetic linkage
21. Crossing over is when homologous chromosomes line up at random along the cells equator.
a. True
b. False
22. If two genes are genetically linked, then they will cross over together.
a. True
b. False
23. Which one of the following is true of independent assortment?
a. It occurs in metaphase 2 when sister chromatids line up at random along the cells equator.
b. It occurs in meiosis 1 when homologous chromosomes line up at random down the middle
of the cell.
c. It is the competition of randomly assorted sperm to fertilize the egg.
24. You know you share 50% of your DNA with each of your parents. How much of your DNA do you
share with your grandparents?
a. 50%
b. 12.5%
c. 25%
25. Using the same rationale, do you think you share more, less, or the same percentage DNA with a
blood (genetically related) uncle or aunt than with a grandparent?
a. More
b. Less
c. The same
26. A genotype is defined as the “genetic makeup of an individual.”
a. True
b. False
27. Black hair and olive skin is an example of a persons . . .
a. Genotype
b. Phenotype
c. Neither of the above