Evolution is a process or the result of a process. Explain this statement.

  • A
    Evolution is a stochastic process based on chance events in nature.
  • B
    Evolution is a directed process driven by conscious selection.
  • C
    Evolution is a result of a process that occurs in a single generation.
  • D
    Evolution is a process of rapid mutation only.

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What is the variation of traits among members of the same species called?

Assertion : Natural selection is the outcome of difference in survival and reproduction among individuals that show variation in one or more traits.
Reason : Adaptive forms of a given trait tend to become more common; less adaptive ones become less common or disappear.

An elephant produces six young ones in its life span of $100$ years. If this continues,then,in $750$ years,$19$ million elephants will be produced. It is $NOT$ possible in reality mainly due to . . . . . . .

Natural selection operates at

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