Meiosis: basis of sexual reproduction (Exam 3)

Question 1

in meiosis, the number of chromosomes _______, while in mitosis, it _________ .
a. Is halved/ doubled.
b. Is halved/ remains the same.
c. Is doubled/ is halved.
d. Remains the same/ is halved.

Answer 1

B. is halved/ remains the same

Question 2

The term “2n” means
a. The diploid chromosome number is present
b. The haploid chromosome number is present
c. Chromosomes with a single nucleus exist in homologous pairs.
d. Both a and c

Answer 2

d. both a and c

Question 3

In higher animals, including humans, meiosis results in the production of
a. Egg ells (ova)
b. Gametes
c. Sperm cells
d. All of the above

Answer 3

d. all of the above

Question 4

Recombination of alleles on non-sister chromatids occurs during
a. Anaphase I
b. Meiosis II
c. Telophase II
d. Crossing over

Answer 4

d. crossing over

Question 5

Alternative forms of genes are called
a. Homologues
b. Locus
c. Loci
d. Alleles

Answer 5

d. alleles

Question 6

If both homologous chromosomes of each pair in the same nucleus, that nucleus is.
a. Diploid
b. Unable to undergo meiosis.
c. Haploid
d. None of the above

Answer 6

a. diploid

Question 7

DNA duplication occurs during
a. Interphase
b. Prophase I
c. Prophase II
d. Interkinesis

Answer 7

b. prophase 1