What is the name of the earths innermost layer

The inner core

Explanation:

:)

before it leaves the nucleus of a eukaryotic cell, mrna is altered in the following ways: - a cap is added to the 5' end of the mrna molecule; - a poly a tail is added to the 3' end; - introns are removed and exons are spliced together.

answer; i believe the answer is (polygenic inheritance;