Question

snurfle meiosis and genetics
number correct:14 number incorrect: 3
what is shown to the right?
a. anaphase ii and cytokinesis
b. telophase i
c. metaphase ii
d. prophase ii
click to choose your answer below:

Explanation:

• Telophase I: In telophase I of meiosis, the homologous chromosomes have separated and reached the opposite poles of the cell. The cell starts to undergo cytokinesis (the process of dividing the cytoplasm) to form two daughter cells. Each daughter cell now has a haploid set of chromosomes (but each chromosome still consists of two sister chromatids). The image shows two cells being formed (beginning of cytokinesis) after the separation of chromosomes (which occurred in anaphase I), which is characteristic of telophase I.
• Anaphase II and Cytokinesis: In anaphase II, sister chromatids separate. But in the image, we don't see the separation of sister - chromatids.
• Metaphase II: In metaphase II, chromosomes (each with two sister chromatids) align at the metaphase plate. The image does not show chromosomes aligning at a central plate in a single cell (as would be the case in metaphase II of a single cell).
• Prophase II: In prophase II, there is chromatin condensation to form chromosomes (each with two sister chromatids), and the formation of the spindle apparatus. The image does not show the early - stage events of chromosome condensation and spindle formation as would be seen in prophase II.

Answer:

B. Telophase I