During which step of meiosis do the homologous chromosomes line up in the middle of the cell?
A. prophase I
B. anaphase I
C. telophase I
D. metaphase I

It is D

metaphase 1

Explanation:

in metaphase chromosome line up in the middle.

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answer; the numbers of valence electrons in the acetic acid molecule (ch3co2h) is 24;