In this paper the literature on the origin and growth of characteristic convolution twists on naturally dehydrated cotton fibres is briefly reviewed and discussed. Also presented are the data on average convolutions and convolution angles, in respect of a large number of the same, diploid and tetraploid cotton varieties, grown at different agroclimatic locations in India during 1992, 1994 and 1995 crop years. From the location wise average values of both these parameters for individual cotton varieties, it has been concluded that both, convolutions and convolution angles are genetically determined. Their values between different varieties of cotton differ but within a variety, remain practically invariant with the location of growth of cotton.