Evolution and Classification
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each of the black spaces below before clicking
on it to display the answer.
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| Any trait that helps an organism survive and reproduce under specific environmental conditions. | adaptive value
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| The process by which species have changed over time. | evolution
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| The disappearance of all members of a species on Earth. | extinction
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| The collection of fossils used to provide clues to Earth's history. | fossil record
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| the normal difference found among offspring OR organisms of the same species. | genetic variation
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| The billions of years of Earth's history as revealed by layers of rock. | geologic time
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| Any alteration in the genetic material of an organism (DNA) | mutation
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| The process through which organisms best adapted to their environment survive to reproduce and pass on their traits more so than other organism not well adapted to their environment. | natural selection
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| Producing more offspring than can possibly survive or be supported by the environment. This ensures that at least some survive to maturity and reproduce. | overproduction
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| A concept or idea that has been tested and confirmed in many different ways over a long period of time. Can be used to make accurate predictions. | theory
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| A special scientific diagram that shows the anestral relationships of organisms. | cladogram
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| The variety of living organism in an ecosystem | Biodiversity
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| to group things based on their similarities | classify
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| The struggle between organisms for the same limited resources in a particular area. A force of evolution | competition
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| the preserved remains of ancient organisms | fossil
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| a group of organisms that share specific characteristics and can mate with each other to produce a fertile offspring. | species
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| a characteristic that is passed from parent(s) to offspring through the genes. | trait
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| studying and comparing embryos for similarities and differences to predict common ancestry | Comparative Embryology
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| studying and comparing the anatomy of living things and fossils for similarities and common ancestors | Comparative Anatomy
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| the studying of DNA and biochemical processes in living things for similarities and differences. | Comparative Biochemistry
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| the comparison and analysis of cells between living organisms. | Comparative Cytology
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| The system of using two names to classify organisms in taxonomy. | Binomial Nomenclature
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| Organisms are unable to reproduce when mated together. Example: dog and cat | Reproductive Isolation
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| Organisms that are separated by land or sea formations. Can lead to reproductive isolation. | Geographic Isolation
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