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Charles Darwin's Theory of Evolution (everything has common ancestor,…
Charles Darwin's Theory of Evolution
Natural Selection
Variation
Adaptation
Survival
Reproduction
Population change over time
variation individuals keep reproduce non variation die out over time
majority population have variation
variation individuals reproduce more
live long
healthier
individuals with variation better equipped survive longer
better get food
hunt
change environment makes some variation advantages
variation in population
colour
behavior
finches
endemism
claws
feather
beak
random genetic mutation
beetle have green skin
hide better on leaves
doesn't get eaten because hidden
green beetle reproduce granting offspring variation
green beetle keep reproducing over time majority population green beetle
everything has common ancestor
comparative anatomy
comparison of two species
proves species related
placenta (whales) compared mammals
feed milk like mammal
breath air lungs
hair
wrist, hand finger bone
ancient undeveloped leg bones
shows similarities two species
dugong closest relative elephant
comparative embryology
similarities development suggest common ancestor
dolphin arm bud like human
fossil record
show development overtime
transition fossils
basilosaurid (whale ancestor)
transition fossil
nose front of head
Maiacetus (older whale ancestor)
leg hip allow walk
whales evolved over time swim from land
insert photo of whale evelution
swim with leg
fully developed hips, legs, feet not walk
DNA comparison
more similar DNA = more recent ancestor
whale similar hippo
chimpanzee 99% DNA
Galapagos island
finch birds
beak shape diffrent island
food
Galapagos tortoises
different shell structure different island
same species?
high low food
add image of shell diffrence
shows environment effects evolution
supports idea same species evolve different paths
plate tectonics
species in one place (gondwana)
split up
different environment
evolve different path
“On the origin of species” 1859
Microevolution
colour
shape
Macroevolution
land to sea
entire anatomy
evolution genetic level
controversy
against biblical teaching
popular 1850
new/radical
scary
lack of evidence when published