This function reads a dataframe with columns:
shortArmSize
and longArmSize
If several species present, use
column OTU
.
It returns a list with the A and A2 indices
A2 = sCL / xCL (s = std dev, CL= chr. length, x= mean)
related to: CVCL= A2 *100 (CV = coeff. var.)
A: Watanabe et al. (1999) asymmetry of karyotype ranging from 0
(symmetric) to 1 (asymmetric)