Question

which process reduces the number of chromosomes by half?
meiosis
ketosis
fertilization

Explanation:

Meiosis is a type of cell - division that results in four daughter cells with half the number of chromosomes of the parent cell. Ketosis is a metabolic state related to fat - breakdown, and fertilization combines the genetic material of two gametes, increasing the chromosome number in the zygote.

Answer:

meiosis