Ascientist makes the argument that two species of butterflies should be considered the same species because they have similar dna, similar wing length, and similar migration patterns. the butterflies also have variations in color patterns and different mating seasons.

Amino acids contain the elements carbon, hydrogen, oxygen, nitrogen, and sometimes sulfur. of the 20 amino acids found in humans, 11 are called "nonessential" because they can be manufactured by the body when needed. which elements in these 11 amino acids are commonly obtained from the metabolism of sugar molecules?

With regard to enzymes, key is to lock as a) substrate is to activation energy eliminate b) product is to substrate. c) enzyme is to active site. d) substrate is to active site.

The color of the fur is the genotypephenotype. the genetic combination of alleles that determine the fur color is called the genotypephenotype.