Evidence for Evolution Review
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Transcript of Evidence for Evolution Review
Evidence for Evolution Review
Mr. Hefti – Pulaski Biology
Generation 1: 1.00 not resistant0.00 resistant
Resistance to antibacterial soap
How natural selection works
Resistance to antibacterial soapGeneration 1: 1.00 not resistant
0.00 resistant
How natural selection works
Resistance to antibacterial soap
mutation!
Generation 1: 1.00 not resistant0.00 resistant
Generation 2: 0.96 not resistant0.04 resistant
How natural selection works
Resistance to antibacterial soapGeneration 1: 1.00 not resistant
0.00 resistant
Generation 2: 0.96 not resistant0.04 resistant
Generation 3: 0.76 not resistant0.24 resistant
How natural selection works
Resistance to antibacterial soapGeneration 1: 1.00 not resistant
0.00 resistant
Generation 2: 0.96 not resistant0.04 resistant
Generation 3: 0.76 not resistant0.24 resistant
Generation 4: 0.12 not resistant0.88 resistant
How natural selection works
Peppered moths!!!
Darw
in’s
finch
es!!
!
The older fossils are found in
lower rock layers!!!
Horse evolutionas told by thefossil record!!!
DNA!!!
Similar but different!!!
Whale’s hipbones!!!
Snake’sleg bones!!!
MINNOWS &
EYELESS CAVE FISH!!!
A structure that serves the same function in two species, but is NOT derived from a common ancestral structure is said to be ANALOGOUS
Analogous structures!!!
DON’TFORGET
CHON!!!
Land
mam
mal
sm
ovin
g in
toth
e w
ater
!!!
Why the variation in color?
C.
The diagram above illustrates the change that occurred in the frequency of phenotypes in an insect population over 10 generations. A probable explanation for this change would be that over time there wasA. a decrease in the adaptive value of gene a B. an increase in the adaptive value of gene a C. an increase in the population of this insect D. a decrease in the mutation rate of gene A