BIOL 101 Week 9 and 10 SI session with Kirsty
Mitosis and Meiosis
23 May 2023
1. Cytokinesis is a term that describes…
a. Nuclear division.
b. Cytoplasmic division.
c. Reduction of the chromosome number.
d. Doubling the chromosome number.
2. What is the correct order of mitosis.
a. Prophase, metaphase, telophase, anaphase, interphase
b. Prophase, interphase, metaphase, anaphase, telophase
c. Interphase, prophase, metaphase, anaphase, telophase
d. Interphase, prophase, anaphase, metaphase, telophase
3. Interphase is the stage during which…
a. Nothing happens in the cell.
b. A dividing cell forms a spindle.
c. Cytokinesis occurs.
d. A cell grows and duplicates its DNA.
4. During which phase of meiosis do homologous chromosome pairs separate?
a. Metaphase I
b. Anaphase I
c. Anaphase II
d. Telophase II
5. Which of the following events occurs during Metaphase 1 of meiosis?
a. Homologous chromosomes arrange themselves at the equator.
b. Centrioles move to the opposite poles.
c. Chromosomes arrange themselves singly at the equator.
d. The cytoplasm is split.
6. Which one of the following combinations results in genetic variation in organisms?
a. Mitosis; sexual reproduction; mutations.
b. Meiosis; asexual reproduction; mutations.
c. Mitosis; meiosis; sexual reproduction.
d. Meiosis; sexual reproduction; mutations.
7. The fertilized egg is called a…
a. Zygote and has 2 sets for chromosomes from each parent.
b. Gamete and has 2 sets of chromosomes from each parent.
c. Gamete and has 1 set of chromosomes from each parent.
d. Zygote and has 1 set of chromosomes from each parent
8. Match the correct biological term with the correct definition.
Term Letter Definition
Non-disjunction a. The division of the
cytoplasm after a
cell nucleus has
divided
Centrosome b. The point of
crossing over
between two
adjacent
chromosomes.
Cytokinesis c. The name of the
process when
homologous
chromosome pairs
fail to separate
during meiosis.
Random arrangement d. Region where the
two chromatids of a
chromosome are
held together.
chiasma e. Process in which
one cells divides to
form 2 genetically
identical daughter
cells.
chromosome f. The structure
responsible for
pulling
chromosomes to the
poles of an animal
cell during cell
division.
Spindle fibre g. Replicates during
interphase to form 2
of itself and then
migrates to the
opposite poles.
Centromere h. The structure that is
made up of two
chromatids joined at
the centromere.
Mitosis i. A phase in the cell
cycle that occurs
before cell division.
Interphase j. A source of genetic
variation that arises
during Metaphase I.
9. Tabulate some main differences between Mitosis and Meiosis.
Mitosis Meiosis
10. Briefly describe all the phases of mitosis in an animal cell.
11. Describe the behaviour of the chromosomes during the process of meiosis I by
referring to the following phases:
a. Prophase I
b. Metaphase I
c. Anaphase I
d. Telophase I
12. What is the main difference between meiosis I and meiosis II?
13. Study the diagrams below representing two phases of meiosis and answer the
following questions.
13.1 Identify the phases in diagram 1 and diagram 2.
13.2 Name the part labelled B.
13.3 Label A is an abnormality during the process of meiosis, name this abnormality.
14. The diagrams below represent a chromosome pair in a female human cell. The cells
(A, B and C) show different events in a phase of meiosis, which aren’t necessarily in
the correct sequence.
14.1 How many pairs of chromosomes occur in a normal human cell?
14.2 Give labels for region X and region Y
14.3 Name the organ in the human female where meiosis occurs.
14.4 Name the
a) Process occurring in diagram B.
b) Phase represented by the diagrams above.
c) Type of cell that would result from meiosis of this cell.
15. Explain the importance of meiosis.
