renniks
Well-Known Member
There's always another way to try and prop up the tottering evolution theory. Until it eventually crashes from too much improbability.Not quite (we didn't evolve from chimps but from a common ancestor of chimps & humans), it's quite consistent with evolution. Speciation typically happens when there is reproductive isolation of populations, which is often geographic. If one population remains in the original environment, occupying its original niche, and that environment is relatively stable, they will be likely to live as their ancestors did for long periods, with evolutionary change proceeding relatively slowly.
A population that moves into a new environment with different selection pressures will generally have to change its lifestyle as well as evolving relatively rapidly under the pressure of the new environmental challenges.
If the common ancestor of chimps and humans was forest-dwelling and the human lineage split off as a population group or groups and migrated into the savannah or along the coast, you would expect to see relatively rapid evolutionary changes in the migrating groups relative to those that remained in the original environment.
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