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11 Cards in this Set
- Front
- Back
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What evidence do fossil records present?
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Fossil records show that animals and plants have changed over generations.
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What relationships are established through the fossil record?
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Relationships between extinct and extant species are established through the fossil record. Traditional fossils establish a link between past and present species.
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What is a homology?
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A homology is a similarity observed among species that is hypothesized to result from common ancestry.
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What is suggested by comparative embryology data?
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Comparative embryology data suggest that the characteristics shared by all vertebrates are due to a common ancestor.
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What characteristics are common among all mammals?
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Front (arm) limb parts are common among all mammals. Therefore it is a homology.
Humerus Radius Ulna Carpals Metacarpals Phalanges |
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What does molecular homology suggest?
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Molecular homology (similar DNA sequences) suggests that all shark species descend from a common ancestor.
Molecular homology (similar amino acid sequences) suggests that all elephant species descend from a common ancestor. |
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The percentage of shared amino acids or nucleotide sequences is used to ______________________,
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The percentage of shared amino acids or nucleotide sequences is used to estimate the relative evolutionary distances among different species.
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What is convergent evolution?
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Convergent evolution is when various species evolve due to similar environmental challenges resulting in similar adaptations in different species that inhabit different locations.
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What are some examples of pathogen and disease vector populations have evolved?
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HIV populations & AIDS related drugs
Mosquito and crop pests Plasmodium Falciparum Pathogenic fungi and fungicides Pathogenic bacteria and antibiotics |
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What determines evolutionary distance among species?
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Molecular homologies
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What do anatomical and molecular homologies suggest?
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Anatomical and molecular homologies suggest a common ancestor among a species.
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