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| Description: Biological evolution = genetic change in populations of organisms across generations May be random or directed by natural selection Natural Selection = the process by which traits that enhance survival and reproduction are passed on more frequently to future generations than those that do not Natural selection is the process by which traits that enhance survival and reproduction are passed on more frequently to future generations In 1858, Darwin and Wallace both proposed natural selection as the mechanism of evolution Adaptive Trait (Adaptation) = a trait that promotes reproductive success A trait that reduces success is said to be maladaptive Picture Stats: Views: 269 Filesize: 983.94kB Height: 453 Width: 1053 Source: https://biology-forums.com/index.php?action=gallery;sa=view;id=35642 |