Mutation

Biology

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Mutagen

Substance which causes mutation or increases the mutation rate to a dangerous level

Mutant

New genetic material produced by mutation

Another name for mutant

Mutant gene, mutant cell, mutant organelle or mutant individual.

Types of mutagen

Physical agents, chemical agents, biological agents

Examples mutagen of physical agents

Ultraviolet from the sun and ionising rays such as X-ray, alpha ray and beta ray

Examples mutagen of chemical agents

Carcinogen in cigarette smoke, food preservatives, formaldehyde and benzene

Examples mutagen of biological agents

Virus and bacteria

Types of mutation

Gene mutation and chromosomal mutation

Gene mutation

Mutation that occurs when there is a change in nucleotide base sequence of a gene

Chromosomal mutation

Mutation that occurs when there are changes to the chromosomal structure or changes to the chromosomal numbers

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