In the MillerโUrey experiment, what did Flask B represent?
Primitive Atmosphere
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10
. A flood drastically reduces the size of a small island population, changing allele frequencies. This situation BEST illustrates what mechanism of evolution?
Genetic drift
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25
How do reproductive isolation mechanisms contribute to biodiversity?
By allowing populations to diverge into distinct species
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10
In what era do reptiles replaced amphibians as dominant vertebrates?
Mesozoic era
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10
What do you call the diagram that shows evolutionary relationships based on shared traits?
Phylogenetic tree
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20
Why is land considered an unlikely place for the origin of life?
Because of strong UV rays and lack of oxygen
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10
Two species have similar bone structures but very
different DNA sequences. This suggests that their similarity is likely due to?
Analogy
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20
What was the first commercially approved genetically modified crop?
Flavr Savr tomato
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lifesaver
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fairy
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gift
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lifesaver
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10
Which Paleozoic period is most closely associated with the rapid diversification of animal life?
Cambrian
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15
Whales and hippos share many genetic similarities compared to other mammals. What does this most strongly indicate about their relationship?
They descended from a recent common ancestor
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10
Two frog species mate and produce embryos, but the embryos fail to develop and die early. This postzygotic barrier is called?
Hybrid inviability
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25
If you want to design a transgenic crop that is drought-resistant and nutritious, what genetic engineering process approach would you combine?