What is a gene, and what does that have to do with evolution?

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What is a gene, and what does that have to do
with evolution?
Discussions start this week.
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This sideclose your eyes
This side keepyour eyes open
Try to remember what you are about to hear.
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This sideclose your eyes
This side keepyour eyes open
Try to remember what you are about to hear.
It's about a kite.
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A newspaper is better than a magazine, and on a
seashore is a better place than a street. At
first it is better to run than to walk. Also you
may have to try several times. It takes some
skill but its easy to learn. Even young
children can enjoy it. Once successful,
complications are minimal. Birds seldom get too
close. One needs lots of room. Rain soaks in
very fast. Too many people doing the same thing
can also cause problems. If there are not
complications, it can be very peaceful. A rock
will serve as an anchor. If things break loose
from it, however, you will not get a second
chance.
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Two ways to think about the world atoms molec
ules organelles cells tissues organs sys
tems organisms environment
Reductionism
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Two ways to think about the world atoms molec
ules organelles cells tissues organs sys
tems organisms environment
Reductionism
holism
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Two Approaches to Biology
holism
reductionism
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To understand complex systems, we must understand
simple systems and visa/versa
holism
reductionism
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Possible Topics for this Semester

• Global Warming
• Overpopulation
• Pandemics
• Water Pollution
• Air Pollution
• Deforestation
• Endangered Species

• Energy Production/ Use
• Genetically Modified Organisms
• Animal Rights
• Acid Rain
• Wilderness
• Ozone Hole

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Fig 55.4
Ecological Interconnections
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CO2 levels in Hawaii and average global temp.
Fig 55.21
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Effects of global warming are already visible
2004
http//www.nationmaster.com/graph/env_co2_emi-envi
ronment-co2-emissions
1914
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Polar bears need ice to hunt
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Arctic Sea Ice
1979
2003
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Without sea ice, polar bears will go extinct
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Wangari Maathai - Resources and
Conflicthttp//youtube.com/watch?vdA0qGlnc-30
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Fig 6.9
An Animal Cell
Videos We will not see these in class, but they
will give you an idea about what cells can
do...http//www.microscopyu.com/moviegallery/livec
ellimaging/a549/index.html http//plantsinmotion.b
io.indiana.edu/plantmotion/starthere.html
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Fig 5.26
Information flow in cells
Protein
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Genes code for proteins

• Proteins are the doers of the cell.
• They act as
• Enzymes
• Structural Support
• Transporters
• Signals

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Fig 5.27
Chains of DNA can store information
Each chain of DNA is made of individual units
nucleotides
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Fig 5.26
Information flow in cells
Protein
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Fig 5.17
The basic structure of amino acids
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(No Transcript)
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Fig 5.21
Amino acids connect together to make proteins.
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Fig 5.21

• Proteins are the doers of the cell.
• They act as
• Enzymes
• Structural Support
• Transporters
• Signals

Proteins are a string of amino acids
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The relationship between DNA and genes
a gene - DNA used to produce RNA or protein
promoter
coding region
terminator
non-gene DNA
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What is a gene, and what does that have to do
with evolution?
Discussions start this week.