Question

in which process do the chromosomes line up in a single line in the middle of the cell?
meiosis ii
meiosis i
mitosis
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Explanation:

In mitosis and meiosis II, chromosomes line up in a single - file line at the metaphase plate (middle of the cell). In meiosis I, homologous chromosomes pair up and line up as tetrads (double - file line).

Answer:

Meiosis II, Mitosis