Question

why is meiosis important?
meiosis creates unique combinations of genes that would otherwise not be possible.
meiosis plays an important role in reproduction in many living things.
meiosis contributes to genetic diversity.
all of these are correct.

Explanation:

Meiosis is a type of cell division. During meiosis, genetic recombination (crossing - over) occurs, which creates unique gene combinations. It is crucial for sexual reproduction in many organisms (producing gametes). Also, the genetic variation (from recombination and independent assortment) it causes contributes to genetic diversity in populations.

Answer:

All of these are correct.