The phrase "a rapid fixation of" is correct and usable in written English.
It can be used in contexts where you want to describe a quick or immediate focus or attention on something.
Example: "The study revealed a rapid fixation of the participants' gaze on the highlighted text during the reading task."
Alternatives: "a quick focus on" or "an immediate concentration on".
The NJ tree derived from consensus nucleotide sequences of the entire FMDV genome of R treated populations disclosed an unusually rapid fixation of mutations in the consensus sequence of RAp45.
Provided a rapid fixation, mitotic cells could be identified with the immunoperoxidase technique in paraffin sections of immersion-fixed tissue.
It is assumed that the Quercy arthropods fossilized by a rapid fixation by phosphate-rich water followed by encrustation and mineralization26.
The formation of paralleled commercial breeds during an extremely short time period is likely a result of rapid fixation of alleles/haplotypes under intensive artificial selection.
While intensive selection in a small population can cause the rapid fixation of a long haplotype, weak selection in a large population would result in the fixation of only a short haplotype, which may not be identified with this approach [ 13].
Large divergence of coding bases in mammals and a strong tendency for rapid fixation of one allele is characteristic of this cluster.
It could be the result of a genetic bottleneck or recent populations in and to the west of the Mobile Bay experienced a rapid population decline leading to the rapid fixation of only a few haplotypes.
Rapid fixation of an allele in a local population might be caused by simple directional selection, but can also be driven by underdominance or epistasis.
One cost associated with the retrograde response-stimulated increase in ERC production may therefore be accelerated ageing 8. Multicopy rDNA arrays provide a broad target for the emergence of mutants 30 and, coupled with concerted evolution in the array 2, could lead to rapid fixation of a favourable mutant (i.e. a TAR1-bearing rDNA repeat unit).
A lack of competence to form adventitious roots by cuttings of Chrysanthemum (Chrysanthemum morifolium) is an obstacle for the rapid fixation of elite genotypes.
