LOCATION AND UNDERREPLICATION OF SATELLITE DNA IN DROSOPHILA MELANOGASTER | Zendy

Paul Wollenzien | Zendy; Paolo Barsanti | Zendy; John E. Hearst | Zendy

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LOCATION AND UNDERREPLICATION OF SATELLITE DNA IN DROSOPHILA MELANOGASTER

Author(s) -

Paul Wollenzien,

Paolo Barsanti,

John E. Hearst

Publication year - 1977

Publication title -

genetics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.792

H-Index - 246

eISSN - 1943-2631

pISSN - 0016-6731

DOI - 10.1093/genetics/87.1.51

Subject(s) - satellite dna , drosophila melanogaster , biology , heterochromatin , satellite , genome , dna , genetics , autosome , x chromosome , chromosome , melanogaster , drosophila (subgenus) , gene , physics , astronomy

The two light nuclear satellites (ρCsCl = 1.672 and ρCsCl = 1.687) have been quantified in DNA isolated from the larvel imaginal discs and brains of Drosophila melanogaster with the genotypes X/O, X/X and X/Y. By comparing the results from these different genotypes, the amounts of the two satellites in the X and Y chromosomes and in the autosomes have been determined. The lightest satellite is not located to any appreciable extent in the X chromosome. The heterochromatic regions are not completely filled by these satellites.—Satellite DNA has also been quantified in DNA isolated from adults containing different genotypes. The two satellites are underreplicated to different extents. The apparent amount of underreplication for one of the satellites is different in different parts of the genome.

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