Chapter 8 Evolution & Natural Selection flashcards _ Quizlet

Th eav erag etimeto d eath fro mstarv atio n in afru

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Unformatted text preview: u als with a d ifferen t v ersio n o f th at trait. Po p u latio n A g ro u p o f o rg an isms o f th e same sp ecies liv in g in a p articu lar g eo g rap h ic reg io n . Th e av erag e time to d eath fro m starv atio n in a fru it fly is ab o u t 2 0 h o u rs. Selectin g fo r in creased starv atio n resistan ce in fru it flies: can p ro d u ce p o p u latio n s in wh ich th e av erag e time to d eath fro m starv atio n is 1 6 0 h rs . Geo rg es Cu v ier's d isco v ery o f fo ssils o f Irish elk an d g ian t slo th s: d emo n strated th at ex tin ctio n mu st o ccu r Wh ile o n th e v o y ag e o f th e HMS Beag le, Darwin : n u rtu red h is lo v e o f stu d y in g n atu re, ex p lo rin g p lan ts an d an imal d iv ersity , an d co llectin g fo ssils. Th e fo llo win g statemen t b est d escrib es th e d ifferen ce b etween artificial an d n atu ral selectio n : Natu ral selectio n acts with o u t th e in p u t o f h u man s: artificial selectio n req u ires h u man in p u t. Ev o lu tio n o ccu rs (n ame th e fo u r mech an isms): o n ly v...
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