Question

1. what are sister chromatids?
2. what holds the chromatids together?
3. when do the sister chromatids separate?
4. during which phase do chromosomes first become visible?
5. during which phase does the cleavage furrow start forming?

Explanation:

• Sister chromatids are two identical copies of a single chromosome connected by a centromere.
• The centromere holds the chromatids together.
• Sister chromatids separate during anaphase of mitosis or anaphase II of meiosis.
• Chromosomes first become visible during prophase.
• The cleavage furrow starts forming during telophase.

Answer:

1. Sister chromatids are two identical copies of a single chromosome connected by a centromere.
2. The centromere holds the chromatids together.
3. Sister chromatids separate during anaphase of mitosis or anaphase II of meiosis.
4. Chromosomes first become visible during prophase.
5. The cleavage furrow starts forming during telophase.