The gene pool is all of the possible variations of a gene. For example: the gene pool for human hair is blonde, brown, black, red, and grey/white. There are sha
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15
Explain below how we use Biogeography as evidence for evolution.
We look at how organisms are distributed around the world and can see evidence of how different environments select for different features. For example: when Da
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15
GENE FLOW
The random movement of individual organisms between two populations of a species. They are able to bring their unique combination of traits to the new populatio
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15
Which layer is the oldest?
I
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baam
Lose 25 points!
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fairy
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25
shark
Other team loses 20 points!
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lifesaver
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15
Do these organisms have a common ancestor?
No
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15
How do we define a species?
A group of organisms capable of interbreeding (mating) and producing fertile offspring (their kids can have kids).
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15
Describe what bottleneck effect is.
Eliminating a large portion of the population (catastrophic event) and few genetic variations are left remaining
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15
What type of interaction occurs when limited resources are available for organism to use? How does this interaction impact an organism’s ability to survive and reproduce?
Competition occurs when limited resources are available. Organisms that “win” the competition are able to survive and reproduce, organisms that “lose” the compe
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15
What did Charles Darwin do and where did he do it?
He researched organisms on the Galapagos Islands. He is known for his studies of finch beak shape/size.
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15
What adaptation seems to increase the fitness of the cacti on the right? How do you think this adaptation increases the ability of cacti on the right to survive and reproduce?
Having spines. This will increase its fitness because animals will not want to eat it, so it will survive and reproduce.
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seesaw
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rocket
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rocket
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lifesaver
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15
Some adaptations can include camouflage and mimicry. State how each help an organisms survive below: Camouflage
the ability of an organism to blend in with its environment. This helps the organism hide from potential predators (so they don’t get eaten) and prey (so they
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15
In Madagascar scientists have discovered a moth, Xanthopan morganii praedicta, that has a 30.5 cm proboscis and feeds from and pollinates Darwin’s orchid, Angraecum sesquipedale. The orchid has a nectar-producing tube that is 27.9 cm long.
The moth has little competition for food
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15
Fossils
Fossil organisms found in bottom (older) layers are more primitive than those in the upper (newer) layers; often times, these extinct fossils resembled modern l
