MUTATION

MUTATION
The term mutation is defined as a physico – chemical change in the gene, larger or small but not due to Mendelian segregation or recombination, leading to change in expression of gene, in the form of remarkable deviation from the normal parental gene expression. Mutation may be larger and conspicuous macro mutations. Small and inconspicuous – micro mutation; the latter is more common and is the main raw material constitutes evolutionary changes in plants and animals. Mutation occurs naturally in all animals and plants but can induced artificially by exposing them to X- rays and chemically known as mutagens. Mutant is the term to denote the resulting modified gene after mutation.
CLASSIFICATION
Mutation can be classified in various ways but broadly into
· Gene mutation
· Chromosomal mutation
· Genomatic mutation or Heteroploidy