Question

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.

X and Y sex chromosomes overlap and combine together during metaphase.

Spindle fibers overlap and attach to the wrong chromosomes during anaphase.

Answer 1

Second no.. is a right answer.

Chromatids of homologous chromosomes exchange corresponding segments.