IS Medical Abbreviation

Indeterminate Sleep

Index of Sexuality

Inescapable

Inescapable Tail Shock

Inner Stripe

Insertion

In genetics, an insertion is the addition of one or more nucleotide base pairs into a DNA sequence. This can often happen in microsatellite regions due to the DNA polymerase slipping. Insertion can be anywhere in size from one base pair incorrectly inserted into a DNA sequence to a section of one chromosome inserted into another.

Insertion Sequence

An insertion sequence is a short DNA sequence that acts as a simple transposable element. Insertion sequences have two major characteristics: they are small relative to other transposable elements (generally around 700 to 2500 bp in length) and only code for proteins implicated in the transposition activity.

Insertion Site

In Situ

In situ refers to an artifact that has not been moved from its original place of deposition. In other words, it is stationary, meaning "still." An artifact beingin situ is critical to the interpretation of that artifact and, consequently, of the culture which formed it.