Evidence worksheet Need to do soon Flashcards
Name 4 pieces of evidence supporting evolution
1) fossil record
a) stone hard evidence of acient life and that organisms have changed after time
when arranged by age, their is clear evidence of progressive evolutionary change
ex) horse # of toes change from 4 to 1 to run faster
2)artificial selection
human breed plants and animals to obtain or improve certain characteristics
(Dog breeding is an example)
3)Vestigial structures
serves no useful function, still present from a common ancestor which used the structure
what did darwin think of this
and what was his hypothesis
Darwin reasoned that if people could alter the appearance and behaviour of
species, then the environment could have a similar selective effect on wild
species.
Darwin proposed that species can change over time, that new species come from pre-existing species, and that all species share a common ancestor.