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. 2012 Nov 26;12:225. doi: 10.1186/1471-2148-12-225

Table 1.

Number of rDNA sites per somatic chromosome complement (2n) in species of angiosperms and gymnosperms

 
Angiosperms
Gymnosperms
Total
  Monocentrics Holokinetics    
Number of karyotypes
856
63
65
984
Mean of sites (s.d.)
5.1 (3.6)
6.6 (6.6)
10.4 (7.1)
5.5 (4.4)
Median
4
4
10
4
Mode
2
4
2
4
Range
2 - 32
2 - 45
2 - 34
2 – 45
Karyotypes with single site* 265 (31.0%) 6 (9.5%) 11 (16.9%) 282 (28.7%)

* Karyotypes with a single pair of sites.

HHS Vulnerability Disclosure