Explain the terms:
(i) Speciation
(ii) Natural selection
(i) Speciation
(ii) Natural selection
1. (i) Speciation - Speciation is an evolutionary phenomenon by which new species are formed. There are three models of speciation:
(1) When the groups that evolve to be separate species are in different geographic locations and are isolated geographically from each other.
(2) When the groups that evolve to be separate species are geographically near and the individuals can move one species-area to others.
(3) When the groups that evolve to be separate species occur together in the same geographic area.
(iii) Natural selection - Natural selection is a key mechanism in evolution.
It is a process that results in an increased survival and reproductive success of individuals that are well adjusted to the environment. The theory of natural selection was given by Charles Darwin.
1. (i) Speciation - Speciation is an evolutionary phenomenon by which new species are formed. There are three models of speciation:
(1) When the groups that evolve to be separate species are in different geographic locations and are isolated geographically from each other.
(2) When the groups that evolve to be separate species are geographically near and the individuals can move one species-area to others.
(3) When the groups that evolve to be separate species occur together in the same geographic area.
(iii) Natural selection - Natural selection is a key mechanism in evolution.
It is a process that results in an increased survival and reproductive success of individuals that are well adjusted to the environment. The theory of natural selection was given by Charles Darwin.
