Evolution Ques 55
55. The idea of mutations was brought forth by
[2012M]
(a) Gregor Mendel, who worked on Pisum sativum.
(b) Hugo de Vries, who worked on evening primrose.
(c) Hardy Weinberg, who worked on allele frequencies in a population.
(d) Charles Darwin, who observed a wide variety of organisms during sea voyage.
Show Answer
Answer : b
Hints & Solution
(b) Mutations are alterations of genetic material. They occur frequently during DNA duplication in cell division. The idea of mutations was brought forth by Hugo de Vries. The plant on which de Vries had experimented was Oenothera lamarckiana (Evening primrose). The mutation observed by de Vries in Oenothera lamarckiana was chromosomal number variant.
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