Connect with us

    Blog

    Speciation and its types | Evolution Class 12 Notes

    Published

    4 weeks ago

    on

    In this article we will discuss about Speciation and its types:- Divergent speciation
    and Transformation speciation

    • Formation of new species is called speciation
    • New species are formed in Variety of ways
    • Speciation are of two types
      1. Divergent speciation
      2. Transformation speciation

    1. DIVERGENT SPECIATION

    • New species are formed from an ancestor species
    • Divergent speciations are of two types

    i) Allopatric speciation

    • Two populations of same species become isolated from each other due to geographic changes
    • Evolution of allopatric population into separate species is called allopatric speciation
    • It is speciation in different place

    ii) Sympatric speciation

    • Evolution of a new species from a surviving ancestral species while both continue to inhabit the same geographic region.
    • It is speciation in same place

    2. TRANSFORMATION SPECIATION

    • Ancestor species changes into a new species
    • Transformation speciation are of two types

    i) Phyletic speciation

    • Ancestor species changes into new species
    • It is gradual changes

    ii) Quantum speciation

    • Suddenly major changes appears in ancestor species
    • Ancestor immediately changed into new species
    • No connective links are present in this type of speciation
    • It is caused by major mutation
    Related Topics:

    Trending