55 which of the following is an advantage of
sexual reproduction?
a it requires only one parent.
b it can remove harmful traits from a
population.
c it involves cells formed through mitosis.
d it increases the mutation rate.

Answer:

"It increases the mutation rate"  is an advantage of  sexual reproduction

Explanation:

The basic thing of evolution is fundamental, as it helps in generation of genetic variation on which the selection can act. Sexual reproduction leads to genetic diversity, and this genetic diversity leads to increase the mutation rate. Genetic diversity occurs because of two various cells which are combining together and biological assortment which happens at the time of cell division. Neutral genetic diversity in the population leads to high mutation rate.  

condenser is used to focus in the light microscope.