Author Question: A human somatic cell contains __________ chromosomes. A. 23 B. 49 C. 46 D. ... (Read 352 times)

lunatika · **on:** Aug 11, 2018

A human somatic cell contains __________ chromosomes.

A. 23 B. 49 C. 46
D. 92

Question 2

Which of the following statements about mutations is correct?

A. Mutations occur when needed to allow individuals to survive environmental changes such as shifts in the climate or the onslaught of a new disease.
B. Mutations are always beneficial, making the organism better adapted.
C. Mutations are very important from an evolutionary perspective because they introduce variation (new alleles) into the gene pool.
D. Mutations are goal-directed, nonrandom changes in the DNA of an organism.