The Telophase Split in Todea

Abstract

DR. MANTON'S photograph¹, in which she claims to show an “incontrovertible evidence” of the telophase chromosome split, illustrates what can only be a dicentric chromosome. While the long arms form a bridge of the criss-cross type², the short arms lie across each other (b in photograph). They are the “two distinct separate threads forced widely asunder”, and their thickness is the same as that of the long arms (c in photograph). The apparent gap between the centromere and the short arm of one chromosome as it is seen in c is due to excessive pressure in squashing the preparation.