Adaptations and Evidence for Evolution
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11 Terms
Structural adaptation definition
Physical features of an organism that help it survive in its environment
Behavioral adaptation definition
How the organism acts to help it survive in its environment
Physiological adaptation definition
Internal processes that help an organism survive
5 pieces of evidence for evolution
Fossils, vestigial structures, homologous structures, embryology, DNA
Fossil definition
Preserved remains of a living organism
Information gathered from fossils
What it looked like, where it lived, what organisms it lived with, how long ago It lived, what the climate was like when it lived
Homologous structures definition
Parts of organisms that are similar in structure and position but differ in function
Vestigial structures definition
Parts of organisms that have lost their original function through evolution
Embryology definition
The idea that all organisms have many similarities in the beginning of life
DNA application to evolution
DNA sequences are used to discover the most common ancestor based on the number of amino acids that differ
Common ancestor definition
An organism that is closest to the species based on DNA evidence