Changes in a dna sequence that affect genetic information are known as
a expressions.
b hybridizations.
c intercalations.
d mutations.

The correct answer is option D, Mutations

Explanation:

A genetic mutation causes alteration in the DNA sequence. These genetic mutation either causes alteration in a small segment of DNA or in the entire DNA. The alterations produced are of permanent nature and due to this once a gene is mutated , it cannot be rectified again. Also, these mutations are passed on to the new offsprings from parents having mutated genes.

it enhances antibody production by t cells of the adaptive immune system.

hope i'm right

explanation:

b. lithosphere, asthenosphere, mesosphere   is the answer most likely