Transcript File - Elko Science

HISTORY
The Beagle
Charles Darwin
1831
Origin of Species 1859
Galapagos Islands
Volcanic Islands
Age?
Temperature of Lava?
Diversity of SPECIES
Most Famous!
http:
//w
ww.
Gene frequencies will remain
the same from generation to
generation as long as 5
conditions are kept in a
population.
1. St Bernard and Chihuahua
2. St Bernard and Wolf
3. Gorilla and Chimp
4. Gorilla and YOU
5. European Human and African Human
6. Horse and Cow
7. Horse and Donkey
8. Horse and Mule
9. Mule and Donkey
10.Ground Finch of Galapagos and Finch
of Ecuador
1. St Bernard and Chihuahua
2. St Bernard and Wolf
3. Gorilla and Chimp
4. Gorilla and YOU
5. European Human and African Human
6. Horse and Cow
7. Horse and Donkey
8. Horse and Mule
9. Mule and Donkey
10.Ground Finch of Galapagos and Finch
of Ecuador
A group of organisms with
similar traits that can interbreed
and produce fertile offspring.
A group of organisms of the
same species in a certain area
at a certain time.
Same Species? Same
Population?
Chukar partridge
in Mandan, North
Dakota in 2012
and Chukar
partridge in Elko,
NV in 2012
Same Species? Same
Population?
Chukar partridge
in Elko, NV in
2011
and Chukar
partridge in Elko,
NV in 2012
• No MUTATION
• No MIGRATION
• RANDOM MATING
• POPULATION is LARGE
• No GENOTYPE has a better
chance at surviving and passing
on their genes than another.
Natural Selection
• The mechanism for Evolution
• The best traits in a population
survive and are passed-on to the
next generation.
• Must be variation present.
Areas of Evidence that
support the Theory of
Evolution:
GEOLOGIC: fossils, strata, etc.
RADIOACTIVE DATING
STRUCTURAL: homologous
structures, etc.
MOLECULAR
DEVELOPMENTAL
References:
Chapter 16
http://www.pbs.org/wgbh/
evolution/