Home
Class 12
BIOLOGY
Variations during mutations of meiotic r...

Variations during mutations of meiotic recombinations are

A

random and directionless

B

random and directional

C

random and small

D

random, small and directional

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Variation during mutations of meiotic recombinations are random and directionless. Hugo de Vries based on his work on evening primrose stated that it is mutation which causes sudden appearance of variations that results in speciation.
He stated that mutations are sudden, heritable and persistant in successive generation. He contradicted Darwinian variations that are small and directional.
Promotional Banner

Topper's Solved these Questions

  • EVOLUTION

    NCERT EXEMPLAR ENGLISH|Exercise Very Short Answer Type Questions.|15 Videos

  • EVOLUTION

    NCERT EXEMPLAR ENGLISH|Exercise Short Answer Tpye Question.|12 Videos

  • ENVIRONMENTAL ISSUES

    NCERT EXEMPLAR ENGLISH|Exercise Long Answer Type Questions|7 Videos

  • HUMAN HEALTH AND DISEASES

    NCERT EXEMPLAR ENGLISH|Exercise All Questions|69 Videos

Similar Questions

Explore conceptually related problems

Mutation is

Define mutations.

Point mutation is

Mutation is :

[A] : Energy transformations are important for living cells. [R] : Organisms show variation and changes due to mutations and genetic recombinations.

Gene mutation is :

Which of the following ways is most likely to decrease the genetic diversity in a population ? (a) Gene mutation (b) Genetic recombination (c) Stabilising natural selection (d) Immigration of individuals

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and

Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and