The Evolution of Isochores

Overview

Journal Nat Rev Genet

Specialty Genetics

Date 2001 Jul 4

PMID 11433361

Citations 189

Authors

A Eyre-Walker

L D Hurst

Affiliations

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Abstract

One of the most striking features of mammalian chromosomes is the variation in G+C content that occurs over scales of hundreds of kilobases to megabases, the so-called 'isochore' structure of the human genome. This variation in base composition affects both coding and non-coding sequences and seems to reflect a fundamental level of genome organization. However, although we have known about isochores for over 25 years, we still have a poor understanding of why they exist. In this article, we review the current evidence for the three main hypotheses.

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