Mutation, null
A mutation (a change) in a gene that leads to its not being transcribed into RNA and/or translated into a functional protein product.
For example, a null mutation in a gene that usually encodes a specific enzyme leads to the production of a nonfunctional enzyme or no enzyme at all.
Read Also:
- Mutation, point
A single nucleotide base change in the DNA. A point mutation may consist of the loss of a nucleotide, the insertion of an additional nucleotide, or the substitution of one nucleotide for another. The first point mutation discovered in humans involved the substitution of one nucleotide for another. It was in sickle hemoglobin, the molecular […]
- Mutation, private
A rare mutation found usually only in a single family or a small population. (It is like a privately printed book.)
- Mute
A mute is a person who does not speak, either from an inability to speak or an unwillingness to speak. The term “mute” is specifically applied to a person who, due to profound congenital (or early) deafness, is unable to use articulate language and so is deaf-mute. A mute in speech is a letter that […]
- Mutism
The inability or unwillingness to speak. A person who is mute cannot or does not care to talk. Someone who was mute was said to be dumb, not in the sense of being stupid, but in the sense of being devoid of the power of speech. The term “mutism” is specifically applied to people who, […]
- Mutism, akinetic
A state in which a person is unable to speak (mute) or move (akinetic). Akinetic mutism is often due to damage to the frontal lobes of the brain.