It is estimated that 20-30% of the proteins in known genomes are of this type [ 3, 4, 5, 6].

Microsporidia have the smallest known (nuclear) eukaryotic genomes.

It has the smallest known genome of any bacterium.

In 1990 Hutchison began work on Mycoplasma genitalium, which has the smallest known genome that can constitute a cell.

This has resulted not only in one of the smallest known genomes of any living organism, but also one of the most genetically stable.

Because of this relationship, Wigglesworthia has lost a large part of its genome and has one of the smallest known genomes of any living organism.

This genus also exhibits one of the highest evolutionary rates and has the smallest known genome among all flowering plants.

It possesses the smallest known genome of any flowering plant.

A good model for a minimal genome is Mycoplasma genitalium, the organism with the smallest known genome.

As of 2011, it has the smallest known genome of all living amniotes, only 0.91 pg (910 million base pairs).