NEET 2019 Biology question

Variations caused by mutation, as proposed by Hugo de Vries are

(1)random and directional
(2)random and directionlessCorrect
(3)small and directional
(4)small and directionless

Answer: (2)

Solution

Hugo de Vries, on the basis of his work on evening primrose, proposed that evolution occurs by mutations, which are sudden, random and directionless changes that are large (saltation, single-step large mutation) and cause

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Question ID VK-092492