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Ch. 11.3 - Genetic changes
Genetic changes
5
Biology
10th Grade
03/22/2011

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Term
Mutation
Definition
any change or random error in a DNA sequence
Term
Point mutation
Definition
mutation in a DNA sequence: occurs from a change in a single base pair
Term
Frameshift mutation
Definition
mutation that occurs when a single base is added or deleted from DNA: causes a shift in the reading of codons by one base
Term
Chromosomal mutation
Definition
mutation that occurs at the chromosome level resulting in changes of the gene distribution to gametes during meiosis: caused when parts of chromosomes break off or rejoin incorrectly
Term
Mutagen
Definition
any agent that can cause a change in DNA: includeshigh-energy radiation, chemicals, or high temperatures
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