mechanics of evolution

evolution

gradual change over many generations

populations

___ change NOT individuals

its not a single event

what drives change?

mechanisms

process driven by specific ____. These are rules that determine which traits disappear and which traits disappe2ar and which thrive

variation

differences in physical or genetic traits among individuals ( diff traits )

heredity

passing of genetic traits from parents through DNA, helpful traits must be in the DNA

selection

process where certain traits provide a survival

natural selection

____ select the traits that work best for survival

artificial selection

humans select traits through breeding ( some traits have a better chance for surviving )

isolation

a population is split so that they can no longer mate or share genes; once seperated the two groups begin to evolve into diff species

Adaption

traits become common because it helps an organism survive and reproduce; “finished product”