Explain a chromosome insertion and the effect it can have on a human.

The correct answer is:

It occurs when part of a chromosome breaks off and attaches to another chromosome.

It results in the duplication of these genes on the same chromosome.

Fragile X syndrome can occur where a person would have 700 insertion repeats.

Difficulties include delay in crawling or walking, hyperactive or impulsive behavior, mental retrdation, flat feet, flexible joints, and large body size.

Hope it helps!