Home
Class 12
BIOLOGY
Single step large mutation leading to sp...

Single step large mutation leading to speciation is also called

A

founder effect

B

saltation

C

branching descent

D

natural selection.

Text Solution

Verified by Experts

The correct Answer is:
B

Hugo de Vries believed that mutation causes evolution and not the minor heritable variations which were mentioned by Darwin. According to Darwin, evolution was gradual while de Vries believed mutartions appear suddenly and hence called it saltation (single step large mutation).
Promotional Banner

Topper's Solved these Questions

  • ENVIRONMENTAL ISSUES

    NCERT FINGERTIPS|Exercise Environmental Issues|142 Videos
  • HUMAN HEALTH AND DISEASE

    NCERT FINGERTIPS|Exercise Human Health And Disease|177 Videos

Similar Questions

Explore conceptually related problems

Single step large mutation is called

Read the following statements regarding evolution (A-D)- A. Whales, bats, cheetah, and humans (all mammals) share similarities in the pattern of bones of forelimbs. B. The diversity of life forms on earth has been changing over millions of years. C. About 65 million years ago the dinosaurs suddenly disappeared from the earth. D. A single-step large mutation is called speciation and explained by Herbert Spencer. How many statements from the above is/are correct ?

Assertion: Frameshift mutation is a gene mutation. Reason: Gene mutation is also called point mutation.

Gene mutations are a also called :

de Vries believed mutation caused speciation and, hence called it

A single gene mutation affecting more than one phenotype is called

white eye mutation leads to depigmentation in many parts of the body in Drosophila. it is referred as

NCERT FINGERTIPS-EVOLUTION-Evolution
  1. Each of us is part of the ongoing evolution of the species which of th...

    Text Solution

    |

  2. Which one of the following scientist's name is correctly mathce dwith ...

    Text Solution

    |

  3. Single step large mutation leading to speciation is also called

    Text Solution

    |

  4. Mathc column I with column II and select the correct option from the g...

    Text Solution

    |

  5. Mathc the column I with column II and select the correct option from t...

    Text Solution

    |

  6. At a particular locus, frequency of allete A is 0.6 and that of allele...

    Text Solution

    |

  7. Hardy-Weinberg equilibrium is known to be affected by gene flow, genet...

    Text Solution

    |

  8. The hardy-weinberg principle cannot operate if

    Text Solution

    |

  9. Match column I with column II and select the correct option from the c...

    Text Solution

    |

  10. The effects of genetic drift are more marked in

    Text Solution

    |

  11. Fill up the balnks in the following paragraph by selecting the correct...

    Text Solution

    |

  12. An isolated population of humans with approximately equal numbers of b...

    Text Solution

    |

  13. Which of the following is most important for speciation?

    Text Solution

    |

  14. The factors involved in the formation of new species are

    Text Solution

    |

  15. Following is the digrammatic representation of the operation of natura...

    Text Solution

    |

  16. The given graph shows the range of variation among population members ...

    Text Solution

    |

  17. Read the following statements and select the correct option. (i) Inc...

    Text Solution

    |

  18. Stablising selection favours.

    Text Solution

    |

  19. Select the pari which does not match.

    Text Solution

    |

  20. The different forms of interbreeding species that live in different ge...

    Text Solution

    |