Table 1. Karyological 45S rDNA phenotypes in Anacyclus species assessed by FISH.
Each phenotype was defined by the number, chromosomal location and dosage of the 45S rDNA sites. H and HE refer to those sites showing the homomorphic (H) or heteromorphic (HE) dosage.
| Karyological phenotypes | No. of sites | Location | |||
|---|---|---|---|---|---|
| Terminal | Interstitial | ||||
| Number of sites | Dosage | Number of sites | Dosage | ||
| I-1 | 4 | 4 | H | 0 | - |
| I-2 | 6 | 6 | H | 0 | - |
| I-3 | 5 | 5 | HE | 0 | - |
| I-4 | 8 | 8 | H | 0 | - |
| I-5 | 8 | 8 | HE | 0 | - |
| I-6 | 8 | 8 | H | 0 | - |
| I-7 | 7 | 7 | HE | 0 | - |
| II-1 | 6 | 4 | H | 2s | H |
| II-2 | 6 | 4 | H | 2 | H |
| II-3 | 7 | 4 | H | 3* | H |
| II-4 | 8 | 4 | H | 2 + 2s | H |
| II-5 | 8 | 4 | H | 4 | HE |
| II-6 | 8 | 7 | HE | 1 | HE |
| II-7 | 11 | 7 | HE | 4 | H, HE |
s The number of interstitial rDNA sites present on the same chromosomes also bearing terminal sites.
* The occurrence of extra chromosomes bearing an rDNA interstitial site.