Who can answer this last one for me ??! Genetic variation among the gametes of one individual is most likely to
increase if crossing over

A. happens during meiosis I.
B. happens after meiosis II.
C. involves different species.
D. involves sister chromatids.

A. happens during meiosis I.

Explanation:

In meiosis I, homologous pairs align independently on the equator. All possible combinations of chromosomes can occur among the gametes. Genetic variation is increased by crossing-over. (union of female and male gametes) produces random combinations.

the growth of the plants is affected by the heat of the light. what is the student doing?

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.