" Natural selection and Speciation leads to evolution" Justify the statement.
Answers
Natural selection defined as the change m frequency of some genes m a population, which gives survwal advantage to a species. Whereas speciation is the development of a new species from pre-existing ones.
This leads to a sequence of gradual change in the primitive organisms over millions of years, to form newer species which are very different from older ones. This is called evolution.
◆Variation is the source of raw material for evolution.
◆Animals are able to adapt themselves to the changing environment.
◆Organisms are better suited to face the struggle for existence.
◆Variations give the organisms an individuality of their own.
◆Without variations there would be no science of evolution , as all individuals of a race would be identical in all aspects.