(algebra) A sequence of groups with adjacent groups connected by homomorphisms such that the image of one homomorphism is the kernel of the next.

a sequence of DNA, RNA, or amino acids that reflects the most common choice of base or amino acid at each position.

(genetics) The sequence at the 5' end of an mRNA molecule that is not translated into protein.

A DNA or protein sequence with a high degree of sequence identity to other sequences in that species, or in others.

(astronomy) A major grouping of stars represented on a Hertzsprung-Russell diagram by a nearly uniform band of increasing luminosity with increasing surface temperature.

Alternative form of main sequence.

A suite of rocks containing a variety of separate strata, with an overall lithology that can be used to interpret the paleoenvironment of deposition over a certain period.

(genetics) The string of base pairs (adenine, thymine, cytosine, and guanine) which, when arranged in triplets to form codons, create a DNA string which encodes polypeptides.

plural of rock sequence

(mathematical analysis) a sequence which converges