The inherited character long neck in giraffe is an example of

Genetic variation

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Natural selection

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Gene drift

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All of the above

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Solution

The correct option is A Natural selection
Long necks and long legs and can reach food high in the trees does not mean that a need to reach high browse was a causative factor in the evolution of those characteristics. Clearly, both Darwin's and Lamarck's conceptions of giraffe evolution were highly speculative.
So, the correct answer is "Natural selection".

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Similar questions

In Lamarkicsm we say that use and disuse of organs is valid according to which neck of giraffe has elongated.

But inheritance of acquired characters is not valid.

So how do we clarify that the long neck of giraffe has passed on to its progeny?

Giraffe has long neck because:

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