Table 1.
Gene Distribution in Different Isochore Classes According to the Number of Retropseudogenes
| No. of retropseudogenes | Isochore (%) | ||
| L1 + L2 | H1 + H2 | H3 | |
| 0 | 31 | 39 | 30 |
| 1 | 47 | 35 | 18 |
| 2 | 56 | 40 | 4 |
| ≥3 | 69 | 31 | 0 |
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The isochore class into which genes are located was predicted according to their GC content at third codon positions (GC3): GC3 <57% for L1 + L2 isochores, GC3 <75% for H1 + H2 isochores and GC3 ≥75% for H3 isochores (Bernardi 1993).
