Raquel CHAVES

Chemical carcinogenesis (2007)

Oliveira,Paula A., Colaço,Aura, Chaves,Raquel, Guedes-Pinto,Henrique, Lopes,Carlos

The use of chemical compounds benefits society in a number of ways. Pesticides, for instance, enable foodstuffs to be produced in sufficient quantities to satisfy the needs of millions of people, a...

Amplification of the Major Satellite DNA Family (FA-SAT) in a Cat Fibrosarcoma Might Be Related to Chromosomal Instability (2006)

Santos, Sara, Chaves, Raquel, Adega, Filomena, Bastos, Estela, Guedes-Pinto, Henrique

Most mammalian chromosomes have satellite DNA sequences located at or near the centromeres, organized in arrays of variable size and higher order structure. The implications of these specific...

Endonuclease banding reveals that atrazine-induced aneuploidy resembles spontaneous chromosome loss in Crassostrea gigas (2005)

BOUILLY, Karine, LEITAO, Alexandra, CHAVES, Raquel, GUEDES PINTO, Henrique, BOUDRY, Pierre, LAPEGUE, Sylvie

Aneuploidy has previously been observed in the Pacific oyster, Crassostrea gigas, and shown to be negatively correlated with growth. Moreover, a significant impact of atrazine exposure has been...

Cytogenetic study of Ostrea conchaphila (Mollusca : Bivalvia) and comparative karyological analysis within Ostreinae (2002)

LEITAO, Alexandra, CHAVES, Raquel, SANTOS, SARA, BOUDRY, Pierre, GUEDES PINTO, Henrique, THIRIOT QUIEVREUX, Catherine

Chromosome preparations of the Olympia oyster Ostrea conchaphila Carpenter were studied using conventional Giemsa, silver staining, and C-banding techniques. The karyotype consists of six metacentric...

Phylogenetic relationships and the primitive X chromosome inferred from chromosomal and satellite DNA analysis in Bovidae

Chaves, Raquel, Guedes-Pinto, Henrique, Heslop-Harrison, John S

The early phylogeny of the 137 species in the Bovidae family is difficult to resolve; knowledge of the evolution and relationships of the tribes would facilitate comparative mapping, understanding...