“…give rise to the appearance of dotted band, or they may be quite large and form solid band or disc (Koltzoff 1943, Bridges 1935, Bauer 1936, Painter and Griffen 1937, Pfeiffer 1940, Yasuzumi 1947, Schultz, MacDuffee and Anderson 1949and Yasuzumi, Yosida and Nanjo 1950. Our electron micrographs support such view of the chromosome.…”