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  1. Mutation | Definition, Causes, Types, & Facts | Britannica

    Dec 4, 2025 · Because mutations are random changes, they are expected to be mostly deleterious, but some may be beneficial in certain environments. In general, mutation is the …

  2. Mutation - Wikipedia

    Mutations may or may not produce detectable changes in the observable characteristics (phenotype) of an organism. Mutations play a part in both normal and abnormal biological …

  3. Mutation

    3 days ago · A mutation is a change in a DNA sequence. Mutations can result from DNA copying mistakes made during cell division, exposure to ionizing radiation, exposure to chemicals …

  4. What Is a Genetic Mutation? Definition & Types - Cleveland Clinic

    Genetic mutations are changes to your DNA sequence that happen during cell division when your cells make copies of themselves. Your DNA tells your body how to form and function.

  5. Mutation – Types, Causes, Mechanisms, Agents, Importance

    Sep 11, 2024 · Mutations can be categorized broadly into two types: gene mutations and chromosome mutations. Gene mutations involve changes in the nucleotide sequence of a …

  6. What Is a Genetic Mutation and Why Does It Matter?

    Aug 6, 2025 · Some mutations affect just one gene, while others span entire chromosomes. Importantly, mutations can occur in somatic cells (non-reproductive cells) or germ cells (sperm …

  7. Mutations – Introductory Biology

    In genetics, a mutation is a change in the genetic material – DNA sequence – of an organism. By extension, a mutant is the organism in which a mutation has occurred. But what is the change …

  8. Types of mutations - Understanding Evolution

    There are other types of mutations as well, but this short list should give you an idea of the possibilities.

  9. What is Mutation? - University of Utah

    Mutation creates slightly different versions of the same genes, called alleles. These small differences in DNA sequence make every individual unique. They account for the variation we …

  10. Mutation and Types of Mutations - Best Biology Notes

    Mutation is a change in DNA sequence caused naturally or by mutagens. Types include small gene mutation (like substitutions) and large chromosomal mutation (like deletions and …