Mutants

Definition

Mutants are organisms or cells that have undergone changes in their DNA sequence, leading to variations from the original genetic code. These changes can affect the organism's phenotype and can be naturally occurring or induced experimentally.

5 Must Know Facts For Your Next Test

1. Mutations can result from errors during DNA replication, exposure to mutagens, or through genetic engineering techniques.
2. Mutants play a critical role in understanding gene function and regulation by providing insight into how alterations in DNA affect biological processes.
3. There are different types of mutations: point mutations, insertions, deletions, and chromosomal rearrangements.
4. Mutant strains of microorganisms are often used in research to study disease mechanisms and to develop new treatments.
5. The Ames test is a widely used method to detect chemical mutagens using mutant strains of bacteria.

Related terms

Mutation:

A change in the nucleotide sequence of an organism's DNA.

Mutagen:

An agent, such as radiation or a chemical substance, that causes genetic mutation.

Phenotype:

The observable physical or biochemical characteristics of an organism as determined by both genetic makeup and environmental influences.