Differential banding induced in polytene chromosomes ofDrosophila melanogaster stained with acridine orange

Experiments carried out on polytene chromosomes ofDrosophila melanogaster showed differential staining of certain areas when cytological preparations were exposed to light, or treated with formaldehyde, and subsequently stained with acridine orange. Some hypotheses are discussed regarding the involvement of some proteic fractions which, in addition to DNA… CONTINUE READING