## geometric series

Overview page. Subjects: Biological Sciences — Mathematics.

A series of numbers or terms in which the ratio of any term to the subsequent term is constant. For example, 1, 4, 16, 64, 256,… has a **common ratio** of 4. In general, a geometric series can...

## Mahalanobis D2

Overview page. Subjects: Probability and Statistics — Ecology and Conservation.

A measure of generalized distance between samples based on the means, variances (see mean square), and covariances of various properties of replicate samples in multivariate analysis. The...

## mutual exclusion

Overview page. Subjects: Computing — Genetics and Genomics.

A phenomenon observed among ciliary antigens of certain protozoans in which only one genetic locus for a serotype is active at a given time. For example, in Paramecium primaurelia and...

## phage

Overview page. Subjects: Genetics and Genomics — Computing.

A program, inserted illegally into a computer network, which alters the functioning of another program. For example, a phage might infect a word processing program in such a way that...