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Natural Selection

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Natural selection


Natural selection occurs due to a series of steps

 

⇒  Organisms show a wide range of variation due to the genes they possess.

 

⇒  These genes allow them to survive in particular environments, because

      they survive they are able to pass on their genes.

 

⇒  The genes passed on to the offspring also allows them to survive Those

      without the genes are not able to compete for food or shelter and will

      soon die

 

⇒   Over time only certain individuals within a species will exist as they evolve

       and out compete others

 

Not everyone agreed with Darwin and many scientists had different views.

A key viewpoint was that of Lamarck’s.

Lamarck argued that the characteristics used a lot by the organisms would

then be developed and passed on to the next generation.

 

Related Topics


Evolution                                        Extinction