The phrase "a duplication of a" is correct and usable in written English.
It can be used when referring to something that is a copy or reproduction of another item or concept.
Example: "The report was found to be a duplication of a previous study, raising concerns about originality."
Alternatives: "a copy of a" or "a reproduction of a".
Even if those genes were all duplicated, an unlikely possibility, a duplication of a minimum of only 10 genes or, if combined with some possibly duplicated genes with ratios 0.7 (see above), a maximum of, for example, 20 genes out of approximately 186 fully normalized genes is certainly not important for considering the generalization of widespread up regulation due to dosage compensation.
In Ciona intestinalis, we have obtained evidence suggesting a duplication of a large portion of genomic DNA resulting in duplicated genes on two different chromosomes (Table 1, Figure S1).
In spite of a large number of governing equations, the model has a quite simple mathematical structure: it is a duplication of a single visco-elastic model.
Down syndrome, which affects 5,000 infants in the United States each year, results from a duplication of a segment of chromosome 21.
It was a duplication of a gene on chromosome 17 that is involved in producing the fatty insulation that covers nerve fibers, as well as several other genes tied to the disease.
When comparative analyses of the P. cantorii complete mitochondrial genome sequences were conducted, we discovered a duplication of a segment of the control region in the mitochondrial genome of P. cantorii.
At the heart of this research is a strain of mice with a duplication of a segment of chromosome 16 that mimics the genetics of the human disorder the region contains more than 100 genes analogous to those affected by the duplication of human chromosome 21, and the animals show some of the same brain abnormalities.
The import is that in root-first proof search, no rules need be applied that would produce a duplication of a formula in a premiss.
These features are consistent with the notion that retinal bipolar cells arose as some kind of a duplication event: perhaps as a duplication or a migration of a subset of photoreceptors, or perhaps as a duplication of a more primitive ciliated sensory cell.
This common ancestor could have arisen by a duplication of a gene encoding a galactose- or mannose-binding lectin.
In the case of Lychnis, this was probably preceded by a duplication of a segment including clpP1, psbB, psbT, psbN, and psbH, but only the clpP1 gene shows signs of positive selection.
