With his accession the throne became firmly established in the hands of a single lineage.

In Africa there is a single main lineage, known as L, which is divided into three branches.

The house of Albret had emerged from obscure origins to become the most important single lineage in the duchy.

The study also reports that most present-day breeds of dog carry the genetic fingerprints of a single lineage of female wolf.

This process can be simulated by drawing exponential random variables with rates until there is only a single lineage remaining (the MRCA of the sample).

Since 1963, the H3N8 virus has drifted along a single lineage at a rate of 0.8 amino acid substitutions per year.

As Woese has written, 'the ancestor cannot have been a particular organism, a single organismal lineage.

In this case, he said, "all of humanity has basically been evolving as a single evolutionary lineage, even though geographically widespread."

A single evolutionary lineage of organisms within which genes can be shared, and that maintains its integrity with respect to other lineages through both time and space.

Due to this, and to their gross overall similarity, he suggested that they probably represent chronospecies within a single evolutionary lineage lasting about 4 million years.