The role of Junk DNA

TL;DR

This paper hypothesizes that junk DNA helps maintain mutation rates in genomes with low GC content, addressing longstanding mysteries about its function and GC-content variation across species.

Contribution

It proposes a novel hypothesis linking junk DNA to mutation rate preservation in GC-poor genomes, offering a new perspective on its potential role.

Findings

Junk DNA may serve to preserve mutation probabilities in GC-poor genomes

The hypothesis links junk DNA function to genomic mutation dynamics

Addresses the enigma of GC-content variation among species

Abstract

Many efforts have been done in order to explain the role of junk DNA, but its function remain to be elucidated. In addition the GC-content variations among species still represent an enigma. Both these two misteries can have a common explanation: we hypothesize that the role of junk DNA is to preserve the mutations probability that is intrinsically reduced in GC-poorest genomes.