A science teacher asks a class to consider the relationship between meiosis and genetic variation.



Which ,begin emphasis,three,end emphasis, student responses explain why meiosis contributes to genetic variation in populations of organisms?

Answer options with 5 options
A.
Sex cells made by meiosis allow each parent to contribute only half of their genes.

B.
Crossing over during meiosis mixes up the alleles more than they otherwise would.

C.
Meiosis carefully sorts chromosomes so that the cells produced are genetically identical.

D.
Meiosis assures that the number of chromosomes in body cells is reduced by half every generation.

E.
Two sex cells made by meiosis combine, producing offspring with a different mix of genes than their parents have.

1 answer

The three student responses that explain why meiosis contributes to genetic variation in populations of organisms are:

A. Sex cells made by meiosis allow each parent to contribute only half of their genes.

B. Crossing over during meiosis mixes up the alleles more than they otherwise would.

E. Two sex cells made by meiosis combine, producing offspring with a different mix of genes than their parents have.