A HeLa cell splitting into two new cells. In 1951, Henrietta Lacks, a poor woman with a middle-school education, made one of the greatest medical contributions ever. Her cells, taken from a cervical-cancer biopsy, became the first immortal human cell line—the cells reproduce infinitely in a lab.
Answer:
C. providing protection for the internal organs
Explanation:
The muscular system is made up of the muscles of the body. The main function the muscular system is that it aids movement. Muscles attached to bones and to one another helps the body during locomotion.
The muscular system also serve to protect the internal organs from damage. Some of the abdominal muscles where there are no bones protects the organs located in that part of the body.
Phenotype = Observable/Physical characteristics.
Simple because there would be a larger gene pool, more opportunity for variation than a small population which has less of a gene pool and therefore less opportunity for variation.