Life Science 7 Genetics & Hereditary

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9 Terms

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Mutation

A change in the DNA sequence of an organism. (Exposure to radiation, or chemicals)

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How can mutation be inherited

Through reproductive cells (sperm & eggs)

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Natural Selection

The organisms with traits better suited for the environment tend to survive better than the ones who don’t. (Survival rate)

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Adaptation

Any alternation to the structure, function, or behavior of an organism resulting from natural selection

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The Fossil Record

Documents the existence, diversity, extinction, and change of life and environment

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DNA

A double helix, contains chromosomes. (Genetic information)

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Proteins

Used to build cells, tissues, organs. Carry out most of the work of cells to preform life functions

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Genotype

The genetic makeup of an organism

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Phenotype

The physical traits that can be seen