The phrase "a density of coding" is correct and usable in written English.
It can be used when discussing the complexity or amount of code within a particular context, such as software development or programming.
Example: "The project faced challenges due to a density of coding that made it difficult to maintain and update the software."
Alternatives: "a concentration of code" or "a complexity of coding".
The frequent recovery of multiple different linked genes on genomic elements indicates a high density of coding sequences in this genome.
To identify regions with an high density of coding conserved sequences – likely gene loci – we applied an improved version of a clustering procedure previously described [ 8] (see also Material and Methods) and detected 25,296 clusters containing 141,001 CSTs.
The low density of coding sequences in these genomes is explained not only by the smaller number of genes but also by the expansion of intergenic regions.
The 73 genes gave a density of one coding region per 9.30 kbp, which is less compact than bamboo, rice and Arabidopsis (one coding region per 7.73, 7.91 and 8.0 kbp, respectively) [ 21, 22, 25].
Thus, the tracts are located in regions with a low density of coding DNA.
We observe that a high local density of coding elements (both metatherian and amniote) is associated to an increased likelihood of breakpoints, corroborating our previous observation that breakpoints occur more often than expected between coding markers.
The number and size of introns, the size of exons, gene density (proportion of coding sites per Mb), and the chromosome size were inferred from the zebra finch genome (Warren et al. 2010).
Like other UTC cpDNAs, the Oltmannsiellopsis genome is less densely packed with coding sequences than Mesostigma and Nephroselmis cpDNAs; at 59.2%, its density of coding sequences is similar to those of Chlorella and Pseudendoclonium cpDNAs.
The N. limnia genome has a coding density of 1.16 protein coding genes per kb of sequence data, which is slightly higher than the coding density for N. maritimus (1.09) or C. symbiosum A (0.99) [Table 2].
As expected, there is a lower density of SNPs in coding sequences and to a lesser extent in CNEs, than in the remainder of the non-coding DNA across the region.
