All three groups (owls, accipitrids [eagles], and falcons) do appear to be members of the "higher land birds," and though there may not yet be full "consilience" between mitochondrial and nuclear sequences for the precise order of divergences of the eagles, falcons, and the owls, there is good progress on their relationships.
Similarly, the formation of peripheral NPC structures, such as the nuclear basket and the cytoplasmic filaments, follows the establishment of the structural pore and central channel but the precise order of events is not well defined.
From the available data we cannot infer the precise order and rate of OR gene family expansion and contraction, or speciation events.
One of the ultimate goals in studying Arp2/3 complex mechanism is to define the precise order and timing of each step in the nucleation pathway.
This assumption is biologically unrealistic, but there is seldom enough kinetic information to be able to discern the precise order and duration of state transitions.
Using fluorescent dyes and lasers, the Illumina sequencers determine the precise order of nucleotides within millions to hundreds of millions of DNA fragments simultaneously.
Today's state-of-the-art machines can read most addresses and then place the mail in the precise order for the letter carrier to deliver door-to-door.
With a hundred and seventy-eight machines to sequence the precise order of the billions of chemicals within a molecule of DNA, B.G.I. produces at least a quarter of the world's genomic data more than Harvard University, the National Institutes of Health, or any other scientific institution.
Finally, the precise order of events, and what triggers each step in the cleavage reaction, also remain unclear.
