Question

check please:)

Answer 1

Which of the following best describes what happens during a cross-over event?

Tetrads change orientation as they line up along the center of the cell.
Chromatids of homologous chromosomes exchange corresponding segments. <-- my choice
X and Y sex chromosomes overlap and combine together during metaphase.
Spindle fibers overlap and attach to the wrong chromosomes during anaphase.

Answer 2

option B is my answer

Answer 3

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