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Unformatted text preview: produce more surviving offspring, so their traits are more common in the next generation. 4. Continuing change through random mutation occasional mutations give rise to new traits which may be adaptive and start the process over again Alternative Theory (Relating to Giraffes) Giraffes spend most time feeding at 60% of height Males among themselves mate by swinging necks and hitting with their heads Knocked unconscious and died Longer necked individuals strike harder blows than short necked Therefore longer neck individuals survive, reproduce, and pass on genes more often than short necked individuals o Sexual Competition Theory First Exam Content Above Chapters 1,16,17,12,13,14, and 22...
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This note was uploaded on 01/31/2011 for the course BS 110 taught by Professor S.lawrence during the Fall '07 term at Michigan State University.
- Fall '07