During which phase of the meiotic cell cycle does DNA replication occur? a. interphase b. prophase c. metaphase d. anaphase e. telophase 2. When does crossover take place in meiosis? a. interphase b. prophase c. metaphase d. anaphase e. telophase
Oogenesis
The formation of the ovum (mature female gamete) from undifferentiated germ cells is called oogenesis. This process takes place in the ovaries (female gonads). Oogenesis consists of three stages known as the multiplication phase, growth phase, and maturation phase.
Cell Division
Cell division involves the formation of new daughter cells from the parent cells. It is a part of the cell cycle that takes place in both prokaryotic and eukaryotic organisms. Cell division is required for three main reasons:
. 1 During which phase of the meiotic cell cycle does
a. interphase
b. prophase
c. metaphase
d. anaphase
e. telophase
2. When does crossover take place in meiosis?
a. interphase
b. prophase
c. metaphase
d. anaphase
e. telophase
3. During which phase of meiosis does the nuclear membrane reform around chromosomes?
a. interphase
b. prophase I
c. metaphase II
d. anaphase I
e. telophase II
4. A human cell containing 22 autosomes and a Y chromosome is...
a. a somatic cell of a male
b. a zygote
c. a somatic cell of a female
d. a sperm cell
e. an ovum
5. Homologous chromosomes move towards opposite poles of a dividing cell during...
a. mitosis
b. meiosis I
c. meiosis II
d. fertilization
e. binary fission
6. Meiosis II is similar to mitosis in that...
a. homologous chromosomes synapse
b. DNA replicates before the division
c. the daughter cells are diploid
d. sister chromatids separate during anaphase
e. the chromosome number is reduced
7. Metaphase of meiosis I and meiosis II differ in that...
a. chromosomes line up at the equator
b. homologues line up in meiosis I and duplicated chromosomes line up in meiosis II
c. sister chromatids line up in meiosis I and chromosomes line up in meiosis II
d. there are the same number of chromosomes
8. Asexually reproducing organisms produce offspring that are genetically identical to each other
and to the parents. What type of cell division are the offspring a product of?
a. mitosis
b. meiosis
c. binary fission
d. fertilization
9. At which stage of meiosis do chromatids separate and become daughter chromosomes?
a. metaphase I
b. anaphase I
c. metaphase II
d. anaphase II
e. telophase II
10. The process in which haploid gametes are formed in diploid organisms is called:
a. cytokinesis
b. interphase
c. meiosis
d. mitosis
e. nuclear division
11. Which of the following correctly ranks
to largest?
a. chromosome,
b. nucleotide, codon, gene, chromosome
c. chromosome, gene, codon, nucleotide
d. codon, nucleotide, chromosome gene
12. A human cell containing 44 autosomes and two X chromosomes is...
a. a somatic cell of a male
b. a zygote
c. a somatic cell of a female
d. a sperm cell
e. an ovum
13. Independent assortment is one of the factors that contributes to genetic diversity. Independent
assortment is associated with which stage of meiosis?
a. anaphase I
b. prophase I
c. metaphase I
d. anaphase II
e. metaphase II
14. The fertilized egg (zygote) of a human contains how many chromosomes?
a. 1
b. 22
c. 46
d. 23
e. 48
15. Which cells of the human body are made through the process of meiosis?
a. gametes
b. somatic cells
c. all cells of the body
d. X and Y chromosomes
e. autosomes
16. A _____________ is the complete set of chromosomes of an organism, arranged and
displayed in pairs and ordered by size. (Select the BEST answer.)
a. genome
b. karyotype
c. nucleus
d. heredity
e. gene
17. Which 2 cells would be more genetically similar to each other?
a. two gametes produced by the same person
b. two somatic cells produced by the same person
c. two eggs produced by the same woman
d. two sperm produced by the same man
18. If a diploid organism has a genome consisting of 22 chromosomes, its gametes will have
_____ chromosomes.
a. 44
b. 11
c. 22
d. 88
e. 19
19. When does DNA replication occur during meiosis?
a. interphase I
b. prophase I
c. interphase II
d. prophase II
e. interphase I and II
20. The term 'synapsis' is associated with which process?
a. crossing over
b. independent assortment
c. mitosis
d. anaphase
e. fertilization
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