Phaseolus polytene chromosomes

Length measurementes

The meassurements of the arm lengths are expressed as mean values () with standard deviation (s). From this have been calculated: the arm ratio (r = q/p), the centromer index (i = [(100 * p)/(p+q)]) and the proportion of the chromosome length of the haploid complement length (HCL). CP = Centromere position: t =  terminal region, st = subterminal region, m = median region.


short arm
(p)
long arm
(q)
total
length
Centromer-
Index
arm
ratio
HCL  CP   n 
  ± s ± s ± s r i      
Chr. [µm] [µm] [µm] q/p [µm] [%]    
A 5.8 ± 1.4 89.2 ± 22.7 94.6 ± 23.9 16.64 ± 2.77 5.8 ± 1.1 11.4 t 8
B 18.7 ± 2.9 72.1 ± 11.1 90.9 ± 13.5 3.87 ± 0.37 20.6 ± 1.7 11.0 st 7
C 38.1 ± 8.2 46.4 ± 12.0 84.6 ± 18.8 1.22 ± 0.22 45.5 ± 4.4 10.2 m 7
D 35.5 ± 11.2 42.5 ± 11.2 78.0 ± 21.4 1.21 ± 0.18 45.4 ± 3.8 9.4 m 5
E 32.3 ± 6.4 44.4 ± 9.6 76.8 ± 14.5 1.40 ± 0.26 42.2 ± 4.9 9.3 m 9
F 31.8 ± 2.9 41.8 ± 8.3 73.5 ± 7.7 1.33 ± 0.30 43.6 ± 6.4 8.9 m 5
G 31.0 ± 8.9 40.5 ± 8.4 71.5 ± 15.9 1.36 ± 0.33 43.0 ± 5.8 8.6 m 6
H 27.9 ± 5.9 42.0 ± 7.0 70.4 ± 12.9 1.54 ± 0.15 39.4 ± 2.3 8.5 m 8
I 29.3 ± 6.4 37.1 ± 9.2 66.4 ± 15.0 1.27 ± 0.19 44.3 ± 3.7 8.0 m 7
J 30.1 ± 3.1 35.4 ± 4.7 65.6 ± 7.3 1.18 ± 0.11 46.0 ± 2.2 7.9 m 7
K 5.4 ± 1.8 51.4 ± 14.6 55.8 ± 16.2 10.68 ± 3.56 9.4 ± 3.5 6.7 t 5
HCL - - 828± 167.1 - - 100.0    

12/18/2018 19:11  Phaseolus polytene chromosomes by Mario Nenno. © 2008- All rights reserved.
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