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!
Answer:
Which statement explains what happens to older crust during seafloor spreading?
Explanation:
D. It moves away from a mid-ocean ridge.
Give brainiest?
The symbiotic relationship is parasitic.
