Select the correct statement from the following:

1. Darwin variations are small and directionless
2. fitness is the end result of the ability to adapt and gets selected by nature
3. all mammals except whales and have seven cervical vertebrae
4. Mutations are random and directional

Subtopic:  Darwin's Theory | Summary of Darwin's Theory |
 78%
From NCERT
AIPMT - 2007

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Darwin got the idea of ‘common descent with modification’ as evolution initially from his observations on:
1. geographic distribution of species
2. fossil records
3. comparative embryology
4. comparative biochemistry

Subtopic:  Darwin's Theory | Summary of Darwin's Theory | Additional Theories of Darwin |
 78%

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