Evolution Question 48

48. de Vries gave his mutation theory on organic evolution while working on:

[2005]

(a) Pisum sativum

(b) Drosophila melanogaster

(c) Oenothera lamarckiana

(d) Althea rosea

Show Answer

Answer : c

Hints & Solution

(c) Pisum sativum - Mendel

Drosophila melanogaster - T. H. Morgan.

Hugo de Vries (1901) put forward a theory of evolution, called mutation theory. The theory states that evolution is a jerky process where new varieties and species are formed by mutations ( $=$ sports or discontinuous variations) that function as raw material of evolution.