Question

question 46
which of the following statements regarding the differences between mitosis and meiosis is false?

1. in meiosis four daughter cells are produced, whereas in mitosis two daughter cells are produced.
2. cells produced by mitosis are diploid, whereas cells produced by meiosis are haploid.
3. in mitosis cytokinesis occurs once, whereas in meiosis cytokinesis occurs twice.
4. crossing over is an event that creates genetic diversity during mitosis.

Explanation:

• Statement 1: Meiosis produces four daughter cells (gametes in many cases) and mitosis produces two daughter cells. This is correct.
• Statement 2: Mitosis occurs in somatic cells (diploid cells) and produces diploid daughter cells. Meiosis occurs in germ - line cells and produces haploid gametes. This is correct.
• Statement 3: In mitosis, there is one cytokinesis event (after telophase). In meiosis, there are two cytokinesis events (after telophase I and telophase II). This is correct.
• Statement 4: Crossing - over (exchange of genetic material between homologous chromosomes) occurs during meiosis (prophase I) and not during mitosis. Mitosis is mainly for growth, repair, and asexual reproduction and does not involve crossing - over for genetic diversity.

Answer:

1. Crossing over is an event that creates genetic diversity during mitosis.