SOMATIC CHROMOSOMES OF HIGHER DIPTERA: VI. ALLOSOME–AUTOSOME LENGTH RELATIONS IN MUSCA DOMESTICA L.

Publisher Website
Google Scholar
Abstract
The length of the two heterochromatic X-chromosomes of pair I in Musca domestica L. is compared with the total length of the five autosomal pairs in 50 mitotic chromosome complements of varying length in cells without colchicine or other pretreatment before fixation. Pair I is the longest pair in short complements and shifts gradually to become one of the shortest in long complements. The heterochromatic Y-chromosome is regularly the smallest chromosome but closely resembles the X in respect to this shifting length relationship. Arm ratios did not change with complement length. The great importance of providing actual total complement lengths with idiograms is emphasized.