Crossing-over rarely occurs in mitosis, unlike meiosis. which of the following is the likely reason?

a. a cell undergoing mitosis does not have homologous chromosomes.
b. chromatids are not involved in mitosis.
c. tetrads rarely form during mitosis.
d. there is no prophase during mitosis

d. There is no prophase during mitosis

Explanation:.during the prophase 1 of meiosis,the chromatins shortens to become chromosomes.these chromosomes double themselves and then pair up as homologous chromosomes,one from each parents.each one is called a bivalent.each bivalent is joined together at the centromere and forms a chromatid.

Sister chromatids pair up and join in points called chiasmata.

Two sets of chromatids forms the tetrads and exchange genes.this process is called crossing over.

It is absent in mitosis.

In meiosis, crossing over causes variations in offsprings

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