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What did Darwin's extensive study of barnacles help him realize about biological variation?

A. Variation is the raw material for evolution.
B. Barnacles have a high degree of genetic convergence with mollusks.
C. Barnacles are actually a type of crustacean.
D. Barnacles have been around for over 400 million years.



Answer :

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Final answer:

Darwin's study of barnacles highlighted that variation is crucial for evolution by natural selection.


Explanation:

Variation in inheritable characteristics between individuals within a population is a fundamental aspect of evolution. Charles Darwin's extensive study of barnacles helped him realize that small heritable variations in traits were common among individuals within a species, leading him to the conclusion that evolution occurs through tiny increments.

Through his observations of barnacles, Darwin recognized that variation is the raw material for evolution. This understanding, along with his findings on natural selection and common ancestry, formed the basis of his theory of evolution by natural selection.


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