An independent variable is that which is: A. Kept constant.
B. Observed to develop a hypothesis.
C. Changed by the scientist.
D. Measured by the scientist.

In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna. b) they study alleles that contain genes, which are chromosomes. c) they study chromosomes that contain genes, which are dna segments.

Scientific evidence is most likely to be consistent if it is based on data from

How are fossils used to date organisms?