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Evolution — BIOLOGY STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceBIOLOGYEvolution3 Marks
Question
Explain what is the difference between the theory of De Vries and Lamarck
✓

Answer

Differences between the theory of De Vries and Lamarck :
De Vries’s TheoryLamarckism
1. De Vries proposed mutation theory of evolution1. Lamarck proposed the theory of inheritance of acquired characters.
2. According to De vries, the origin of new species is not by inheritance of small variation but by inheritance of sudden large variations due to mutation.2. According to Lamalck, the environment has a great influence on the growth and thaped shape of life due to which the structure of their organs gradually charges These acquired changes all inherited in ancestral traits from one generation to the next.
3. Example : Evening primrose plant.3. Example : Giraffe’s neck is long

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