Four patients with trisomy 8 identified by the fluorescence and Giemsa banding techniques.

Abstract

The C group chromosomes in man cannot be distinguished solely on morphological grounds, thus, the nature of an extra C chromosome remains unknown unless it is an X chromosome, which can be identified by its late DNA-replication pattern. Extra autosomes belonging to the C group have been observed with or without mosaicism in a wide variety of blood disorders (cf, de la Chapelle et al,