A single gene mutation would most likely occur if 1.
messenger-RNA molecules temporarily bond to DNA molecules
2.
the cytoplasm lacks the amino acids necessary to synthesize a certain polypeptide
3
a base sequence in a DNA molecule is changed
4
transfer-RNA molecules do not line up properly on a messenger-RNA molecule

Which of the following statements is true? a. the main cause for speciation is an increase in gene flow. b. organisms that reproduce asexually are not considered part of a species. c. on a tree of life diagram, speciation is shown by the merging of two different lineages. d. the size of the geographic area inhabited by a population can cause speciation.

Which equation is used to calculate the magnetic force on a charge moving in a magnetic field

What are some characteristics of a free enterprise economy?