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The degenerated wing of a Kiwi is an acq...

The degenerated wing of a Kiwi is an acquired character. Why is it an acquired character?

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(i)When there is a change in the environment,the animals responds to the change.
(ii)They develop adaptive structures.The characters developed by the animals during their life time, in response to the environmental changes are called acquired characters.
(iii) Lamarck.s use and disuse theory states that if an organ is used constantly,the organ develops well and gets strengthened.When an organ is not used for a long time,it gradually degenerates.
(iv)Degenerated wing of kiwi is due to disuse of wings over generations since they have learns to walk on land for all their needs.This is an acquired character in response to their habitat.According to lamarck such characters are passed to the off springs by inheritance.
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