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Multiple Choice
Which of the following is a common feature found in metaphase, metaphase I, and metaphase II?
A
Sister chromatids are pulled apart to opposite poles
B
The nuclear envelope reforms around separated chromosomes
C
Chromosomes align at the cell's equatorial plane (metaphase plate)
D
Homologous chromosomes pair and undergo crossing over
Verified step by step guidance
1
Step 1: Begin by understanding the stages of cell division. Metaphase occurs in both mitosis and meiosis, specifically in metaphase, metaphase I, and metaphase II. Each stage has distinct characteristics based on the type of division.
Step 2: Recall that in metaphase (mitosis), chromosomes align at the cell's equatorial plane (metaphase plate). This ensures that sister chromatids are evenly distributed to the daughter cells during anaphase.
Step 3: In metaphase I (meiosis), homologous chromosomes (pairs of chromosomes) align at the metaphase plate. This is distinct from metaphase in mitosis because homologous chromosomes are paired, not individual sister chromatids.
Step 4: In metaphase II (meiosis), chromosomes align at the metaphase plate again, similar to mitosis. However, this occurs in haploid cells, and the sister chromatids are prepared to separate during anaphase II.
Step 5: The common feature across metaphase, metaphase I, and metaphase II is that chromosomes align at the cell's equatorial plane (metaphase plate), ensuring proper segregation during subsequent stages of cell division.