Heredity & Variation

Heredity & Variation Evolution:  is the orderly change of various forms through a slow but continuous process. It give rise to a new complex body design even while the simpler body designs continue to flourish.   Heredity:  The transfer of characters or traits from the parents to their off springs is called heredity.   Variation:  The differences between the characters or traits among the individuals of the same species are called variations.   Importance of variation:   1.    They enable the organism to adapt them in changing environment.   2.    Variation forms the basis of heredity   3.    They form raw material for evolution and development of new species. Variations may or may not help organisms to survive: a)    Some variations help organisms to survive : -   Eg :- There are some beetles living in green bushes. They increase their numbers by reproduction. Crows can easily see the red beet...