What is the least likely to be a source of genetic variation among living organisms?
a. mutations
b. sexual reproduction
c. meiosis
d. asexual reproduction

Structures in cells that carry out specific functions.

The picture shows a fishing technique called trawling. how might trawling affect marine biodiversity

Why do some dna fragments move farther than others during gel electrophoresis? a. because their shapes are different b. because they are different types of molecules c. because the samples are different colors d. because their masses are different