In a random mating population in equilibrium, which of the following brings about a change in a gene frequency in a non-directional manner?
A
Mutation
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Random drift
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Selection
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Migration
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution
The correct option is A Mutation In a random mating population in equilibrium, mutations bring about a change in gene frequency. Mutations are non-directional.
Hugo de Vries conducting experiments on Evening Primrose and when he self-pollinated the plants from F1 generation. He found that though the majority of plants are similar to parents, there were a few different plants which appeared at random, in which inherited characters appeared suddenly without any previous indication in the race.
On this basis, he gave the mutation theory
mutations appear suddenly but become operational immediately
mutations are inheritable
do not revolve around normal characteristics of species
same type of mutations can appear in the number of individuals of the species