Published online by Cambridge University Press: 31 May 2012
Glossina morsitans submorsitans Newstead has two pairs of autosomes, a pair of sex chromosomes (males are heterogametic), and from two to seven supernumerary (=B) chromosomes (Southern and Pel1 1973). The only information allowing assignment of loci to linkage groups in this subspecies is that electrophoretic evidence suggests that five polymorphic loci, including Est-2 and Mdh, are autosomal (Gooding 1984a), and breeding experiments indicate that sex ratio distortion, favoring production of females, is due to an X chromosome-linked factor (Gooding 1986).