Chapter 8 Evolution & Natural Selection flashcards _ Quizlet

Wh en ag ro u p o fin d iv id u alsco lo n izesa n

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Unformatted text preview: ia n atu ral selectio n , g en etic d rift, mig ratio n , o r mu tatio n . Th e ch ief co n cern amo n g co n serv atio n b io lo g ists try in g to p ro tect small p o p u latio n s is: to p reserv e g en etic d iv ersity . Wh en a g ro u p o f in d iv id u als co lo n izes a n ew h ab itat, th e ev en t is lik ely to b e an ev o lu tio n ary ev en t b ecau se: small fo u n d in g p o p u latio n s are really g en etically rep resen tativ e o f th e in itial p o p u latio n . To estab lish th at ev o lu tio n b y n atu ral selectio n is o p eratin g in a p o p u latio n , o n e mu st d emo n strate v ariab ility fo r a trait, h eritab ility o f th at trait, d ifferen tial rep ro d u ctiv e su ccess b ased o n th at trait, an d : n o th in g else. "Su rv iv al o f th e fittest" may b e a mislead in g p h rase to d escrib e th e p ro cess o f ev o lu tio n b y n atu ral selectio n b ecau se: su rv iv al matters less to n atu ral selectio n th an rep ro d u ctiv e su ccess d o es. Ad ap tatio n refers to : 1 . May b e o u t o f d ate, h av in g b een sh a...
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