Questions: What phase of mitosis or meiosis is depicted to the below?

What phase of mitosis or meiosis is depicted to the below?
Transcript text: What phase of mitosis or meiosis is depicted to the below?
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Solution

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Solution Steps

Step 1: Analyze the Chromosome Arrangement

The chromosomes are lined up single file along the metaphase plate. This arrangement is characteristic of metaphase in mitosis or metaphase II in meiosis II. It is not characteristic of metaphase I where homologous chromosomes align in pairs. It is also not anaphase where chromosomes are separating.

Step 2: Distinguish Between Mitosis and Meiosis II

In metaphase of mitosis, sister chromatids of duplicated chromosomes line up along the metaphase plate. In metaphase II of meiosis II, individual chromosomes (that have already undergone recombination) line up along the metaphase plate. The image does not allow us to distinguish between replicated chromosomes (mitosis) or single chromosomes (meiosis II). It does not show whether crossing over has occurred.

Step 3: Consider the Possible Answers

Based on the image alone, both metaphase (mitosis) and metaphase II (meiosis II) are plausible.

Final Answer

Metaphase (mitosis) or Metaphase II (meiosis II)

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