In biology, a mutation is a permanent alteration of the nucleotide sequence of the
genome of an organism, virus, or extrachromosomal DNA or other genetic ...
A gene mutation is a permanent alteration in the DNA sequence that makes up a
gene, such that the sequence differs from what is found in most people.
The DNA sequence of a gene can be altered in a number of ways. Gene
mutations have varying effects on health, depending on where they occur and
This change can affect a single nucleotide pair or larger gene
segments of a chromosome. Point mutations
can be categorized into three types:
: Although a change in the DNA sequence occurs, this type of mutation
does not change the protein that is to be ... More »
Few mutations are bad for you. In fact, some mutations can be beneficial. Over
time, genetic mutations create genetic diversity, which keeps populations healthy.
But mutation is not always bad. Most DNA changes fall in the large areas of the
genome that sit between genes, and usually they have no effect. When variations
Mutations are changes in the genetic sequence, and they are a main cause of
diversity among organisms. These changes occur at many different levels, and ...
Gene flow · Sex and genetic shuffling ... Mutations happen for several reasons. ...
Mutations can also be caused by exposure to specific chemicals or radiation.
Apr 5, 2013 ... But sometimes these biological differences lead to genetic mutations that are
extremely rare, and sometimes debilitating. Historically, many ...