Home
Class 12
BIOLOGY
Explain the following two components of ...

Explain the following two components of Darwin's theory of natural selection. Variations

Text Solution

Verified by Experts

Variations : There are differences among all individuals. These differences are called variations. According to Darwin, the variations are gradual (continuous) and those, which are helpful in the adaptations of an organism towards its surroundings would be passed on to next generation, while the other disappears.
Promotional Banner

Topper's Solved these Questions

  • EVOLUTION

    OSWAAL PUBLICATION|Exercise TOPIC :2 EVOLUIONARY THEORIES .ITS MECHANISM AND EVOLUTION OF MAN( SHORT ANSWER TYPE TYPE QUESTIONS-II)|11 Videos

  • EVOLUTION

    OSWAAL PUBLICATION|Exercise TOPIC :2 EVOLUIONARY THEORIES .ITS MECHANISM AND EVOLUTION OF MAN( LONG ANSWER TYPE TYPE QUESTIONS)|4 Videos

  • EVOLUTION

    OSWAAL PUBLICATION|Exercise TOPIC :2 EVOLUIONARY THEORIES .ITS MECHANISM AND EVOLUTION OF MAN( VERY SHORT ANSWER TYPE TYPE QUESTIONS )|23 Videos

  • ENVIRONMENTAL ISSUES

    OSWAAL PUBLICATION|Exercise TOPIC - 2 ( MULTIPLE CHOICE QUESTIONS.)|22 Videos

  • HUMAN HEALTH AND DISEASES

    OSWAAL PUBLICATION|Exercise TOPIC-2(Multiple choice question)|23 Videos

Similar Questions

Explore conceptually related problems

Explain the following two components of Darwin's theory of natural selection. Formation of new species.

Darwin's theory of natural selection was based on

Theory of natural selection dwells on

What are the main postulates of Darwin's theory of natural selection?

Define Natural Selection

Which one of the following was not given by Darwin's theory of evolution

Explain Darwin's Theory of Evolution

OSWAAL PUBLICATION-EVOLUTION-TOPIC :2 EVOLUIONARY THEORIES .ITS MECHANISM AND EVOLUTION OF MAN( SHORT ANSWER TYPE TYPE QUESTIONS-I)
  1. What is founder effect?

    Text Solution

    |

  2. While creation and presence of variation is directionless, natural sel...

    Text Solution

    |

  3. Gene flow occurs through generations can occur across language barrier...

    Text Solution

    |

  4. Enumerate two most characteristic criteria for designating a Mendelian...

    Text Solution

    |

  5. Migration may enhance or blurr the effects of selection. Comment.

    Text Solution

    |

  6. Name the law that states that the sum of allelic frequencies in a popu...

    Text Solution

    |

  7. Differentiate between Homo habilis and Homo erectus.

    Text Solution

    |

  8. Define the terms : a) Gene Flow b) Genetic drift.

    Text Solution

    |

  9. Explain the origin of simple organic compounds on the primitive earth.

    Text Solution

    |

  10. Explain the following two components of Darwin's theory of natural sel...

    Text Solution

    |

  11. Explain the following two components of Darwin's theory of natural sel...

    Text Solution

    |

  12. How does Darwin's theory of natural selection explain the appearance o...

    Text Solution

    |

  13. Write four important resemblances between apes and humans.

    Text Solution

    |

  14. Name the fossil modern man and living modern man. How do they differ i...

    Text Solution

    |

  15. Name the main stages in human evolution in order of their appearance.

    Text Solution

    |

  16. What advantages man got over other primates by having erect posture an...

    Text Solution

    |

  17. Name the curvatures in the human spine. Give their advantage.

    Text Solution

    |

  18. Describe the Lamarck's theory of evolution.

    Text Solution

    |

  19. Name various factors which affect hardy-Weinberg equilibrium.

    Text Solution

    |