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. 2000 Oct;10(10):1631–1642. doi: 10.1101/gr.122800

Table 4.

Characteristics of the Benchmark Sequence Sets

Set No. G + C Sequence length
Genes (average)
CDS (average)
average min max no. length density no. exons length density
h178 178 50% 7169 622 86640 1 3657 53% 7169 5.1 968 21%
Gen178 42 40% 177160 70037 282097 4.1 15136 8.6% 43000 21 4007 2.3%

The columns Genes (average) and CDS (average) provide values averaged over all the sequences (178 in h178 and 42 in Gen178). Gene density provides the percentage of nucleotides that occur in genic regions (exons, introns, and UTRs), and the number of kilobases per gene. CDS no. exons is the average number of coding exons per sequence, and CDS density is the percentage of nucleotides that occur in coding regions.