Sources of Genetic Variations

Question 1

Takes place in prophase I, refers to the exchange of genetic material between nonsister chromatids (chromatids from different homologous chromosomes)

Answer 1

Crossing Over

Question 2

the basis for intrachromosomal recombination, creating new combinations of alleles on a chromatid.

Answer 2

Crossing Over

Question 3

Another sources of genetic variation that takes place in anaphase I after their random alignment in metaphase I.

Answer 3

Random separation of homologous chromosomes.

Question 4

A protein that holds chromatids together, is key to the behavior of chromosomes in mitosis and meiosis.

Answer 4

Cohesin

Question 5

In anaphase of mitosis, cohesin along the entire length of the chromosome is broken down by an enzyme called ________, allowing the sister chromatids to separate.

Answer 5

Separase

Question 6

Cohesin at the centromere is protected by a protein called

Answer 6

Shugoshin 💅🏻💋✨

Question 7

Because of this protective action by &________, the centromeric cohesin remains intact and prevents the separation of the two sister chromatids during anaphase I.

Answer 7

Shugoshin 💅🏻💋✨