Chromosomal Location of Ribosomal DNA (rDNA), (GATA)n and (TTAGGG)n Telomeric Repeats in the Neogastropod Fasciolaria Lignaria (Mollusca: Prosobranchia).

Autor: Vitturi, R., Colomba, M.S., Gianguzza, P., Pirrone, A.M.
Zdroj: Genetica; May2000, Vol. 108 Issue 3, p253-257, 5p
Abstrakt: This paper reports on a successful application of fluorescent in situhybridization (FISH) with three repetitive DNA probes (ribosomal DNA (rDNA), (GATA)nand (TTAGGG)n) in the chromosomes of Fasciolaria lignaria(Mollusca: Prosobranchia: Neogastropoda). rDNA FISH consistently identified four chromosome pairs per spread in the three examined specimens. The telomeric sequence (TTAGGG)nhybridized with termini of all chromosomes. GATA FISH revealed abundant, dispersed minisatellite regions which were not associated to the XY sex-determining mechanism as indicated by the absence of a Y specific pattern of labelling. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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