Therefore, some gene loss from the terminal segment could be responsible for the manifestation of epilepsy in ring chromosome 20 syndrome.

We find that, while the presence-absence approach is most heavily affected by gene loss and horizontal transfer, the other four methods reveal stronger phylogenetic signals.

The gene presence-absence analysis seemed to be dominated by the phenotypic signal, primarily that from gene loss.

However, changes accumulate between more distantly related species by processes that include horizontal gene transfer and gene loss.

As a result of gene loss, these bacteria completely rely on the host cell for survival.

Thus, the possibility of massive gene loss in these lineages is quite plausible.

It has something to do with gene loss.

The gene loss occurred relatively recently in human evolution-less than 240,000 years ago.

The absence of these two proteins in this genus is likely due to selective gene loss.

A possible verification that this hypothesis is realistic is to estimate the number of apparent gene losses.