Crossing over shuffles alleles on:.a. sister chromatids. b. different non-homologous chromosomes. c. chromosomes within different cells. d. different homologous chromosomes. d. none of the answers are correct.

d

Explanation:

Crossing over shuffles alleles on non-sister chromatids of homologous chromosomes.

At the prophase I stage of meiosis, homologous chromosomes synapsed to form a four-chromatid structure known as tetrad. Exchange of chromosomal segments between non-sister chromatids of the tetrad then takes place, a process that results in the reshuffling of genes or alleles on the non-sister chromatids.

Hence, none of the answers is correct.

Correct option: d

it's c. (to reduce the greenhouse effect/carbon gasses)

population. population is the number of people or animals in a particular place. an example of population is over eight million people living in new york city.

here is your answer hope i .