can someone answer this

Question

Which of the following explains why meiosis contributes to genetic variations?

A - it increases the ratio of mitosis within an organism

B - It produces offspring that are different from either parent

C - It decreases the rate of mutation occurrence

D - It forms DNA that is resistant to environmental changes

Answer 1

The answer is B.

We can eliminate C and D pretty quickly because if we stay focused on the question, we are keeping in mind that we are considering genetic variations and decreasing rate of mutations definitely won't increase genetic variability so C is out. Looking at D - forming DNA resistant to environmental changes is likely getting at preventing mutations so this is essentially the same answer as C.

NOW - looking at A requires you to know what mitosis is. Mitosis is cell reproduction with daughter cells that are IDENTICAL to the parent cells. Unlike Meiosis which produces genetic variability. Increasing the ratio of something just means we are going to do more of it so A - increasing the ratio of mitosis within an organism is also incorrect just means more cells are going to make identical copies of themselves. So A is also incorrect.

Hope this helps!