1. Why is only one strand of DNA transcribed into Because the oth-
mRNA? er strand would
produce the same
amino acid se-
quence in reverse
order
2. During which phase does crossing-over occur? prophase-I
3. What is the function of nucleosomes? To prevent DNA
strands from tan-
gling.
4. Which of the following combinations of letters accu- A and C
rately represents two sister chromatids?
5. During which of the following stages of meiosis do anaphase II
the sister chromatids separate?
6. Which of the following combinations of letters accu- A and D
rately represents two homologous chromatids?
7. A maternal homologue and a paternal homologue a tetrad.
synapse to form:
8. Once nerve cells become mature, they don't usually G0 phase
undergo cell division. Based on your knowledge of
the cell cycle, you would predict that mature nerve
cells become arrested in the of the cell
cycle.
9. The M phase of the cell cycle involves two main mitosis and cytoki-
processes: nesis.
10. The mitotic spindle is made of: microtubules.
, 11. A cell is in metaphase if: the chromosomes
are aligned at the
midplane of the
cell.
mRNA? er strand would
produce the same
amino acid se-
quence in reverse
order
2. During which phase does crossing-over occur? prophase-I
3. What is the function of nucleosomes? To prevent DNA
strands from tan-
gling.
4. Which of the following combinations of letters accu- A and C
rately represents two sister chromatids?
5. During which of the following stages of meiosis do anaphase II
the sister chromatids separate?
6. Which of the following combinations of letters accu- A and D
rately represents two homologous chromatids?
7. A maternal homologue and a paternal homologue a tetrad.
synapse to form:
8. Once nerve cells become mature, they don't usually G0 phase
undergo cell division. Based on your knowledge of
the cell cycle, you would predict that mature nerve
cells become arrested in the of the cell
cycle.
9. The M phase of the cell cycle involves two main mitosis and cytoki-
processes: nesis.
10. The mitotic spindle is made of: microtubules.
, 11. A cell is in metaphase if: the chromosomes
are aligned at the
midplane of the
cell.
