A spontaneous change in the genetic composition of an organism at the gene, chromosome, or genomic level. Mutations usually refer to alterations to new allelic forms, and represent new material for evolutionary change.
In genetics, a permanent, heritable change in the nucleotide sequence of a chromosome, usually in a single gene; commonly leads to a change in or loss of the normal function of the gene product.
are the changes of a gene from one allelic form to another (i.e., the nucleotide sequence changes).
a change in the genetic material (DNA) of a cell, or the change this causes in a characteristic of the individual, which is not caused by normal genetic processes.
Changes in the way cells function or develop, caused by an inherited genetic defect or an environmental exposure. Such changes may lead to cancer.
Heritable changes in the DNA of cells. Usually changes that could be detrimental to the operation of the cell.
Changes in the genetic material of an organism. These changes may or may not alter the function of a gene or genes, but if genotype is altered there is a chance that this will lead to an accompanying change in phenotype. Back to the top of this page N - P
Harmful changes to genes that do not lead to evolution or add new information. [See Genes.
changes in the DNA that codes for a gene, which may or may not cause a normal working gene to become a non-working gene.
rare changes in the DNA of genes which eventually lead to genetic diversity.
A sudden variation in an inheritable characteristic. In this case, a change in the gene identified and associated with Dravet syndrome.
Changes in the structure of genes. A mutation may be inherited or caused by an environmental exposure. Certain changes may lead to cancer or other diseases. Also called a gene alteration.