Question

Select the correct answer.
A biologist observes that a species of stick insects on a remote island has three different color traits, almost equally distributed among the population. One phenotype is dark green, a second is light green, and a third is light green with dark green stripes. Over a decade, the biologist observes that the dark green phenotype becomes the most abundant, making up nearly 70% of the population. Which statement is the best explanation for this phenomenon?

A.
None of the color characteristics are undergoing selection at the present time.
B.
A founder effect has resulted in an increase in the numbers of the dark green phenotype.
C.
The dark green phenotype benefits the insects’ survival, making them more likely to reproduce.
D.
The insects with the dark green color trait have developed an r-selection strategy for survival.
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Answer 1

Answer:

Option C is correct.

It is so because according to Darwin's Natural selection theory - only those organisms who would be able to survive in different conditions of nature would grow and survive.

Answer 2

The dark green phenotype benefits the insects’ survival, making them more likely to reproduce

Step by step explanation:

• It can be best explained with the help of Darwin's Natural Selection Theory.
• Natural selection is the survival and multiplication of organisms due to differences in phenotype.
• The phenotype which has the ability to exist different conditions of environment are only one who can survive.
• In similar manner, The dark green insects had the phenotype which can survive the changes occurred at the island. where as, light green and light green with dark green stripes couldn't survive