similar features NOT due to relatedness (arose independently)
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analogies
what is necessary for evolution? (3)
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1. variation --> differences amoung indv. of the same species
2. reproduction--> how genetic info is passed
3. mutation--> the source of new alleses
, what are Darwins 4 observations?
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1. members of a population vary in their traits
2. trais are inherited from parents to offspring
3. all species are capable of producing more offspring than could possibly
survive
4. due to lack of food/resources, many offspring do not survive
explains life unity and diversity
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decent of modification
organisms becoming better suited for their environment
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natural selection
remnants of features that function in ancestor but have no purpose in present
organism
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analogies
what is necessary for evolution? (3)
Give this one a try later!
1. variation --> differences amoung indv. of the same species
2. reproduction--> how genetic info is passed
3. mutation--> the source of new alleses
, what are Darwins 4 observations?
Give this one a try later!
1. members of a population vary in their traits
2. trais are inherited from parents to offspring
3. all species are capable of producing more offspring than could possibly
survive
4. due to lack of food/resources, many offspring do not survive
explains life unity and diversity
Give this one a try later!
decent of modification
organisms becoming better suited for their environment
Give this one a try later!
natural selection
remnants of features that function in ancestor but have no purpose in present
organism
Give this one a try later!
