Sentence examples for existed at the origin from inspiring English sources

Whether orthologs of these few critical post-synaptic genes were lost in the sponge or acquired by an evolutionary descendant, does not negate the finding that a proto-post-synaptic complex existed at the origin of the animal kingdom.

A third point mentioned by Jékely is to study social conflict in marine microbial biofilms 'since nutrient-rich terrestrial soils are not likely to have existed at the origin of eukaryotes'.

The straight horizontal line represents the fixed point which exists at the origin, z = 0, for all values of λ.

Although many control schemes assume a system with a vanishing condition, a linear partial state feedback control law is provided even if uncertainties exist at the origin.

As a follow up of the observation that replication could not exist at the very origin of life as this would have required some kind of external intervention (Dyson 1985; Szathmary 2006), I have explored here, in the case of bacteria, the consequences of a reproduction process that would be able to create and retain newly created information, in particular.

Of all the organisms that may have existed at the time of LUCA, by definition only one lineage is survived by known progeny; however, this lineage retains a genomic record of heterogeneous genetic origins.

No Sumdex backpacks existed at the store.

Neither existed at the time.

Those doubts existed at the time and will always exist.

In contrast, there is no evidence that ARGFX sequences existed before the origin of placental mammals.

Heterogeneity in tumours already exists at the cell level and is highly influenced by this cell's genetic background and origin as well as the environment where it establishes (De Sousa et al, 2013).