Hey there! Sign in to join this conversationNew here? Join for free
x Turn on thread page Beta
    • Thread Starter
    Offline

    12
    ReputationRep:
    How does a new species arise and what are the four main stages?
    Posted on the TSR App. Download from Apple or Google Play
    Offline

    12
    ReputationRep:
    Speciation is the term used when a new species is created:
    1) Isolation - a barrier eg. Mountain splits one population of a species into two populations.
    2) mutation - different mutations occur in each population
    3) selection - due to different selection pressures in the populations, different mutations are advantageous and passed to offspring.
    4) time - after time has passed, mutations have been passed on to the next generations and the two populations have evolved into two different species - they can no longer breed to produce fertile offspring.

    Hope this helps
    Posted on the TSR App. Download from Apple or Google Play
 
 
 
Reply
Submit reply
Turn on thread page Beta
Updated: February 10, 2018
Poll
Do you agree with the proposed ban on plastic straws and cotton buds?

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

Write a reply...
Reply
Hide
Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.