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32 Cards in this Set
- Front
- Back
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Three or more forms of a gene that code for a single trait.
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Multiple alleles
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A person who has 1 recessive allele for a trait and 1 dominant allele, but does not have the trait.
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Carrier
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A chart or "family tree" that tracks which members of a family have a particular trait.
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Pedigree
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A technique by which a small amount of the fluid that surrounds a developing baby is removed; the fluid is analyzed to determine whether the baby will have a genetic disorder.
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Amniocentesis
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A picture of all the chromosomes in a cell arranged in pairs.
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Karyotype
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An organism that is genetically identical to the organism from which it was produced.
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Clone
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All of the DNA in 1 cell of an organism.
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Genome
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A group of similar organisms that can mate with each other and produce fertile offspring.
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Species
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A trait that helps an organism survive and reproduce.
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Adaptation
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The process by which individuals that are better adapted to their environment are more likely to survive and reproduce than other members of the same species.
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Natural Selection
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Any difference between individuals of the same species.
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Variation
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The preserved remains or traces of an organism that lived in the past.
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Fossil
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A fossil formed when minerals replaced all or part of an organism.
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Petrified Fossil
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A technique used to determine which of 2 fossils is older.
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Relative Dating
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A technique used to determine the actual age of a fossil.
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Absolute Dating
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The time it takes for half of the atoms in a radioactive element to break down.
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Half-life
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A species that does not have any living members.
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Extinct
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The theory that species evolve during short periods of rapid change.
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Punctuated Equilibria
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The process of change that occurs during an organism's life to produce a more complex organism.
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Development
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A change in an organism's surroundings that causes the organism to react.
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Stimulus
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An action or change in behavior that occurs as a result of a stimulus.
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Response
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The mistaken idea that living things arise from nonliving sources.
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Spontaneous Generation
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An organism that makes its own food.
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Autotroph
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An organism that can't make its own food.
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Heterotroph
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The maintenance of stable internal conditions despite changes in the surroundings.
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Homeostasis
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The scientific study of how living things are classified.
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Taxonomy
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The naming system for organisms in which each organism is given a 2-part name- a genus name and a species name.
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Binomial Nomenclature
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A classification grouping that consists of a number of similar closely related species.
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Genus
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A group of similar organisms that can make and produce fertile offspring in nature.
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Species
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The process by which species gradually change over time.
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Evolution
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An organism whose cells lack a nucleus and some other cell structures.
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Prokaryote
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An organism with cells that contain nuclei and other cell structures.
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Eukaryote
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