Question

which of the following statements best explains the role of meiosis in reproduction?
meiosis makes it possible for a zygote to have the correct number of chromosomes.
meiosis increases the chances of fertilization because it produces four daughter cells.
meiosis results in offspring with genotypes that are not exact copies of the parents.
meiosis allows chromosomes to exchange genetic material through crossing over.

Explanation:

Meiosis is a type of cell - division that produces gametes (sperm and egg cells). Each gamete has half the number of chromosomes of a normal body cell. When a sperm and an egg fuse during fertilization, the resulting zygote has the correct number of chromosomes for the species. This is the key role of meiosis in reproduction. The other statements do not best explain the fundamental role of meiosis in reproduction. Producing four daughter - cells does not directly relate to the role in fertilization and zygote formation. Offspring having non - identical genotypes and crossing over are important for genetic variation but not the primary role in reproduction.

Answer:

Meiosis makes it possible for a zygote to have the correct number of chromosomes.