Question
Wed December 19, 2012 By:
 

differenciate between natural and artificial selection

Expert Reply
Thu December 20, 2012
Natural selection is the process resulting in the evolution of organisms best adapted to the environment. This process allow the advantageous heritable traits (which help an organism to survive and successfully reproduce) to become more common in a population over successive generations. Such traits tend to be passed on to succeeding generations and become more frequent in a population, whereas other less favourable traits tend to become eliminated.

Artificial selection occurs when organisms with a certain trait or traits, such as looking like a Pomeranian, are chosen and allowed to survive and to reproduce. In other words it is the intentional breeding for certain traits, or combinations of traits, over others. The criterion involved isn’t survival and reproduction; it depends on the judgement of the human running the experiment.

Ask the Expert