A4.1 Evolution
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H
Looking for relative
We look for embryos, bone structure, protein, fossil, DNA Protein & DNA are connected
Evolution
Change in heritable characteristics of a population Said by Darwin Heritable: only genetic traits can be changed through evolution
Homologous structures
Same structure but not same function
Divergent evolution
One split to two then modified over time by natural selection Showed evidence of common ancestry bc they developed similar or can be from left over traits
Analogous structures
Same function different structures (Not ancestry related)
Selective breeding of evolution
When humans choose which animal or plant to reproduce their offsprings to have desired traits -type of artificial selection, not natural selection Considered by humans instead of nature
Reproductive isolation
When population is separated (Geographically)
Differential selection
A shift in a population to another BEC of different selective pressures