Which example does not include a case of phenotypic variance? a. a population of garter snakes with several color patterns use different escape behaviors b. a population of bacteria is polymorphic for a single nucleotide polymorphism that resulted from a synonymous mutation c. a genetically uniform population of barnacles express more muscular reproductive organs in wavy environments d. a population of humans in which individuals differ in height e. a population of finches has their bill size increased by directional selection

The answer is (b) A population of bacteria is polymorphic for a single nucleotide polymorphism that resulted from a synonymous mutation.

Explanation:

Phenotypic variance means a change, a mutation on the phenotype of beings, like animals, plants or even microorganisms.

In the examples above, option (a) is about snakes with different colors, having different behaviours, the phenotype changes.

For example (c) a uniform population of barnacles shows differences in their phenotype in wavy environments, more muscular reproduction organs.

In example (d) human individuals differ in heigt.

For example (e) finches have their bill size increase.

I hope it works!

"a.) well–developed vascular system."

not only is it colder, it also becomes darker, less salty, and more dense.