A highly repeated satellite DNA (Hy500) located in the centromeric heterochromatin of the European plethodontid salamander Speleomantes (formerly Hydromantes) was studied. The Hy500 family represents about 1% of the Speleomantes supramontis genome and has a major repeating unit of about 500 base pairs, which may have evolved from the progressive amplification of shorter sequences. This centromeric satellite is conserved in all the Speleomantes species, which nevertheless show distinct patterns of chromosomal distribution, which are of relevance as to their phylogenetic relationships.
A centromeric satellite DNA in the European plethodontid salamanders (Amphibia, Urodela) / R., Batistoni; I., Nardi; Rebecchi, Lorena; M., Nardone; A., Demartis. - In: GENOME. - ISSN 0831-2796. - STAMPA. - 34:(1991), pp. 1007-1012.
A centromeric satellite DNA in the European plethodontid salamanders (Amphibia, Urodela)
REBECCHI, Lorena;
1991
Abstract
A highly repeated satellite DNA (Hy500) located in the centromeric heterochromatin of the European plethodontid salamander Speleomantes (formerly Hydromantes) was studied. The Hy500 family represents about 1% of the Speleomantes supramontis genome and has a major repeating unit of about 500 base pairs, which may have evolved from the progressive amplification of shorter sequences. This centromeric satellite is conserved in all the Speleomantes species, which nevertheless show distinct patterns of chromosomal distribution, which are of relevance as to their phylogenetic relationships.
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