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Question
Which of the following cannot be explained by Lamarckism?
Which of the following cannot be explained by Lamarckism?
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Solution
The correct option is D Dull progeny of Noble laureate
According to Lamarck, during the lifetime of an organism new characters are developed due to internal vital forces, effect of environment, new needs, use and disuse of organs. These acquired characters are inherited from one generation to another. According to him, intelligence should also be inherited and so it fails to explain dull progeny of nobel laureate.
The ancestors of giraffe were bearing a small neck and forelimb and were like horses. But as they were living in places with no surface vegetation, they had to stretch their neck and forelimbs to take the leaves for food, which resulted in the slight elongation of these parts. It can be explained by Lamarckism.
The ancestors of cave dwellers had normal eye sight. On account of living under continuous dark conditions, the animal lost their power to see. It can be explained by Lamarckism.
According to Lamarck, during the lifetime of an organism new characters are developed due to internal vital forces, effect of environment, new needs, use and disuse of organs. These acquired characters are inherited from one generation to another. According to him, intelligence should also be inherited and so it fails to explain dull progeny of nobel laureate.
The ancestors of giraffe were bearing a small neck and forelimb and were like horses. But as they were living in places with no surface vegetation, they had to stretch their neck and forelimbs to take the leaves for food, which resulted in the slight elongation of these parts. It can be explained by Lamarckism.
The ancestors of cave dwellers had normal eye sight. On account of living under continuous dark conditions, the animal lost their power to see. It can be explained by Lamarckism.
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