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29 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Who was Cuvier? |
A paleontologist who believed catastrophe caused extinction |
catastrophe |
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Who was Lamarck? |
believed that giraffes acquired long necks due to stretching over generations (acquired characteristics) |
wrong theory |
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4 tenets of natural selection |
all populations have genetic variation/ all organisms overpopulate/ the environment presents challenges for successful reproduction/ individuals best fit in the environment tend to live longer |
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how are fossils dated? |
by using radioactive isotopes |
imagine dragons |
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homologous is? |
same structure |
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analogous is? |
same function |
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vestigial structure? |
no longer has original function |
wisdom teeth |
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purpose of Hardy-Weinburg law |
its the baseline for evolutionary comparison |
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dominant allele genotype of H.Weinburg law |
P |
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recessive allele genotype of H.Weinburg law |
Q |
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homozygous recessive frequency of H.Weinburg law |
Q^2 |
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homozygous dominant frequency of H.weinburg law |
P^2 |
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heterozygous frequency of H.Weinburg law |
2PQ |
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genetic drift? |
changes in allele frequencies of a gene that are due solely to chance |
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stabilizing natural selection |
the best overall plant or animal is favored because it chooses a medium subject( not too tall, not too short) |
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directional natural selection |
selection pressure against certain individuals and a single trait is favored(long necked giraffes) |
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disruptive natural selection |
selection pressure not on medium individual (tall and short plants survive, but not medium sized) |
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What is the earths age |
4.6 billion years |
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Characteristics of the first cell |
heterotrophic and anaerobic |
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when and how did oxygen show up on earth |
about 2 billion years ago and because photosynthesis |
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what gases were present in earth's early atmosphere |
carbon dioxide, methane, ammonia |
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First cell characteristics |
anaerobic, unicellular, DNA, heterotrophs, prokaryotes |
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what is the endosymbiotic theory |
the idea that eukaryotic cells originated from prokaryotes |
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exergonic reactions? |
energy exits the reaction needing no energy |
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endergonic reactions |
energy enters the reaction requiring energy |
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light dependent reactions in photosynthesis occur in? |
thylakoids |
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light independent reactions in photosynthesis produce? |
sugar (stroma) |
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diffusion? |
high concentration to low |
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active transport? |
low concentration to high |
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