Term
| lamarck on long-necked giraffes |
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Definition
change in environment-trees got taller
giraffes stretched necks to reach leaves
passed on slightly longer necks to offspring
future generation had long necks |
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Term
| neo-darwinian on long-necked giraffes |
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Definition
variation-many different giraffes most short necked (some by mutation) had longer necks
longer necks-advantageous, could get more food and live to reproduce
pass on genes (DNA) for long necks to offspring
more individuals in future generations had long necks |
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Term
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Definition
change in environment-pollutions, trees got darker
need for moths to get darker-they did
passes on darker color to offspring
future generations of moth darker |
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Term
| neo-darwinian on pepper moths |
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Definition
variation-many different colored moths, most like but some by chance mutation are darker
darker moths had advantage, since could blend in with dark trees and not get eaten. more of them lived and reproduced
passed on genes (DNA) for dark color to offspring
more individual in future generations were darker in color |
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