Araschnia levana is a species of butterfly that breeds several times a year. It has two distinctly colored pupae. Although the genes for pupa color do not differ, those that emerge in spring are orange and those that emerge in summer are brown. The

seasonal color variations in pupae mean that the pupae blend into the colors in their environment. This is an example of

A) a threatened species.
B) an endemic species.
C) a keystone species.
D) phenotypic plasticity.


Answer: D

Biology & Microbiology

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