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Evidence for Evolution Review. Mr. Hefti – Pulaski Biology. Peppered moths!!!. Darwin’s finches!!!. The older fossils are found in lower rock layers!!!. Horse evolution as told by the fossil record!!!. DNA!!!. Similar but different!!!. Whale’s hip bones!!!. Snake’s - PowerPoint PPT Presentation
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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