E.  Modern Theory of Evolution  ANSWERS
              (First Darwin, then DeVries & finally beyond to the current)

               1.   Inherited mutations must occur in the  DNA (a molecule) of
                    reproductive cells.

              2.   Variation (the opposite of being Identical) is increased by the type
                    of cell reproduction known as  M E I O S I S.   (Please think!)

              3.   N A T U R A L      S E L E C T I O N  is the struggle of an organism
                    in a specific   E N V I R O N M E N T.

             4.    Each organism, due to genetic   V A R I A T I O N S, is different
                    from all others.  The favorable traits, which allow this species to
                    grow in numbers, are known as   A D A P T A T I O N S. 

             5.    If the environment changes, nature will select for the survival of
                    different  F I T N E S S  traits (adaptations) and the process of 
                    E V O L U T I O N   will proceed in a different direction.

            6.   Beneficial (G O O D) traits (known as  A D A P T A T I O N S) tend
                  to   INCREASE in frequency in a population.   These do not have to
                  be new traits in the population, only ones which becoming more common.

  7.   Unfavorable traits tend to  DECREASE  in frequency in a population;
   eventually resulting in the  E X T I N C T I O N  of those traits from
   the population.  

8.    Eventually, that entire population may become  E X T I N C T.  

    
   

 

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