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-A mutation in a pathogen may produce a new strain. This new strain may become resistant to an antibiotic through natural selection. The new strain ma...

In all organisms, allows creation of bigger molecules from smaller ones

In animals, enables muscle contraction

In some animals (mammals and birds), provides heat to maintain...

Within a gene pool of a population, there is genetic variation, due to mutation. This leads to phenotypic variation. Some individuals will be better adapted to the environment than others and will ther...

Within a population of a species there is great geetic variation giving rise to variation in their phentoypes. Some phenotypes enable an organism to be better adapted to its environment than other memb...

Sexual reproduction involves the fusing of 2 gametes (male and female). This results in a variety of offspring as the genetic information is mixed.

Asexual reproduction requires only1 par...