<span>A genetic mutation occurs when there is a permanent change in the nucleotide sequence of the DNA. The error falls in to 3 main groups; Deletion, substitution, or an addition of base pairs. The main reason why mutations are fatal are because of the rapid cell development that can cause cancer.</span>
Benthic organism i think!!
Answer:
A. The smooth, clear rock layers
Explanation:
Answer:
Somatic cells
Explanation:
A somatic cell mutation in an organism is passed on to the daughter cells in an organism. But this type of mutation doesn't affect the future generations because only genes carried by sperm or ova can become part of offspring's gene material.
<span>a. chemicals produced by neurons that function as hormones—neurohormones
b. chemicals that act locally on nearby cells—paracrine factors
c. chemicals secreted by presynaptic terminal—neurotransmiters
d. influences same cell type from which it is secreted—autocrine agent
e. chemical secreted into the blood by specialized cells; travels some distance to target tissues—endocrine hormones</span>