GenBio Quiz

This cell is in which stage of mitosis?

• Early prophase

• Late prophase (prometaphase)

• Metaphase

• Anaphase

• Telophase

What must this cell do before it can carry out mitosis? (The cell has a diploid number of 4 chromosomes; 2n = 4).

Choose all answers that apply:

• Replicate its DNA

• Duplicate its centrosome

• Undergo cytokinesis

Something’s wrong with this picture!

What might explain the unusual pattern seen in this cell?

Choose 1 answer:

• During metaphase, one of the chromosomes failed to bind microtubules from both spindle poles.

• During prophase, one of the chromosomes failed to condense.

• The cell made too many copies of its chromosomes.

• The cell is actually undergoing meiosis.

How many chromosomes are shown in this picture? How many chromatids?

Choose 1 answer:

• 4 chromosomes, 4 chromatids

• 4 chromosomes, 8 chromatids

• 8 chromosomes, 4 chromatids

• 8 chromosomes, 8 chromatids

This cell is in which stage of mitosis?

Choose 1 answer:

• Early prophase

• Late prophase (prometaphase)

• Metaphase

• Anaphase

• Telophase

A pigeon zygote contains 80 chromosomes.

How many chromosomes did the zygote receive from its mother?

Choose 1 answer:

• 20

• 40

• 80

• 10

This cell is in which of the following stages?

Choose 1 answer:

• Cytokinesis

• Anaphase

• G₂

• G₁

• Metaphase

Which of the following statements accurately compares somatic cells and gametes?

Choose 1 answer:

• Gametes and somatic cells both contain homologous pairs of chromosomes.

• Gametes are diploid, while somatic cells are haploid.

• Somatic cells have 2n chromosomes and gametes have n chromosomes.

• Somatic cells are involved in reproduction, and gametes are not.

During meiosis, a process known as crossing over occurs.

Which of the following is true of crossing over?

Choose 1 answer:

• Segments of DNA are traded between unrelated chromosomes.

• Crossing over occurs more often in male gametes than female gametes.

• Most homologue pairs do not have any crossover events.

• A chiasma indicates that a crossover has occurred.

This cell above is undergoing meiosis II.

Which stage of meiosis II is the cell in?

Choose 1 answer:

• Metaphase II

• Prophase II

• Anaphase II

• Telophase II