Genetic Change in Viruses. Viruses are continuously changing as a result of genetic selection. They undergo subtle genetic changes through mutation and major genetic changes through recombination. Mutation occurs when an error is incorporated in the viral genome
Answer:
A
Explanation:
As the species seperated they formed a differnt beak based on what they ate.
Cartilaginous fish do not contain any bones - their skeleton is made up of cartilage.
an organelle that releases energy for metabolic activity in a nerve cell is the what
the mitochondria