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Evolution Vocabulary

TermDefinition
fossil record record of all the fossils ever discovered on earth
mold the impression of an organism onto a rock
cast a fossil copy of an organism made when a mold of the organism is filled with sediment or mineral deposits
trace fossil the preserved evidence of the activity of an organism
geologic time scale chart that divide’s earth’s history into different time units based on changes in the rocks and fossils
extinction event that occurs when the last individual organism of a species dies
biological evolution the change over time in populations of related organisms
naturalist a person who studies plants and animals by observing them
variation a slight difference in an inherited trait among individual members of a species
natural selection the process by which organisms with variation that help them survive in their environment live longer, compete better, and reproduce more than those that do not have the variations
adaptation an inherited trait that increases on organism’s chance of survival and reproducing in a particular environment
camouflage an adaptation that enables a species to blend in with its environment
mimicry an adaptation in which one species looks like another species
selective breeding the selection and breeding of organisms for desired sex traits
comparative anatomy the study of similarities and differences among structures of living species
homologous structure body parts of organisms that are similar in structure and position but different in function
analogous structure body parts that perform a similar function but differ in structure
vestigial structure body part that has lost its original function through evolution
embryology the science of development of embryos from fertilization to birth
Created by: hannah.hornsby
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