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
will reward medal

Answer 1

its b..Chromosomal crossover (or crossing over) is the exchange of genetic material between homologous chromosomes that results in recombinant chromosomes. It is one of the final phases of genetic recombination, which occurs during prophase I of meiosis (pachytene) in a process called synapsis.

Answer 2

ok thank you

Answer 3

ur welcome:)