Gene Flow And Genetic Drift Test

Gene Flow And Genetic Drift

This is online test 02 for CBSE class 12 Biology Evolution (Gene flow and genetic drift).. There are 10 questions in this test with each question having around four answer choices.

Questions & Answers

1
Single step large mutation is called
  • A
    Organization
  • B
    Regeneration
  • C
    Evolution
  • D
    Saltation
    Correct
2
Which of the following sentences is incorrect about microspheres?
  • A
    Have all properties of life
    Correct
  • B
    Bud to form smaller microspheres
  • C
    Composed of many protein molecules
  • D
    Don’t have all properties of life
3
In which condition gene ratio remains constant in a species?
  • A
    Mutation
  • B
    Gene flow
  • C
    Sexual selection
  • D
    Random mating
    Correct
4
Two geographical regions, separated by high mountain ranges are
  • A
    Neotrophical and Ethiopian
  • B
    Nearctic and Palaearctic
  • C
    Oriental and Australian
  • D
    Palaearctic and Oriental
    Correct
5
What's the difference between genetic drift and change due to natural selection?
  • A
    Genetic drift never occurs in nature, natural selection does
  • B
    Genetic drift does not involve competition between members of a species
    Correct
  • C
    There is no difference
  • D
    Genetic drift does not require the presence of variation
6
The age of rock is calculated on the basis of ______.
  • A
    none of the above
  • B
    number of strata present
    Correct
  • C
    amount of uranium present
  • D
    types of fossils present
7
What's the difference between natural selection and sexual selection?
  • A
    Natural selection is a type of sexual selection
  • B
    Sexual selection is a type of natural selection
    Correct
  • C
    Sexual selection occurs during sex
  • D
    Sexual selection occurs within demes, natural selection does not
8
Natural selection is a process in which heritable variations enabling better survival are enabled to
  • A
    Reproduce and leaves less number of progeny
  • B
    Reproduce and leave greater number of progeny
    Correct
  • C
    Grow slower in new habitat
  • D
    Grow faster in new habitat
9
Grow slower in new habitat
  • A
    Evolution and speciation
  • B
    Disruption and non-directional change
  • C
    Stabilization and directional change
    Correct
  • D
    Stabilization and speciation
10
Which of the following factors influence the Hardy-Weinberg equilibrium? i. Gene migration ii. Genetic drift iii. Mutation iv. Reproduction v. Genetic recombination
  • A
    Only ii, iii, and iv
  • B
    Only i, ii, iii and iv
  • C
    Only i, ii, iii and v
    Correct
  • D
    Only iii, iv and v