Chromosomal analysis of peromyscus gratus (cricetidae) of tecamachalco, puebla, Mexico

• Martínez-Vázquez, Jesús ^[1] ; Vela-Montero, María de los Ángeles ^[1] ; González-Monroy, Rosa María ^[1]
  1. [1] Benemérita Universidad Autónoma de Puebla

     Benemérita Universidad Autónoma de Puebla

     México

     
• Localización: Biocyt: Biología, Ciencia y Tecnología, ISSN-e 2007-2082, Vol. 13, Nº. 1, 2020, págs. 909-917
• Idioma: español
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• Resumen

  • The description was made of the karyotype of Peromyscus gratus (Cricetidae) in the municipality of Tecamachalco, Puebla. Performing the technique of bone marrow extraction, in the obtention of chromosome, G bands was used Trypsin and for C bands a Barium Hydroxide solution was employed. P. gratus presents a diploid number of 2n = 48 and a fundamental number of NF = 54, the autosomes correspond to one metacentric, one submetacentric, two subtelocentric and 19 pairs telocentric from large to small. The sex chromosome X was subtelocentric and the Y was submetacentric unlike other populations of the species. The chromosomal banding pattern G was obtained. As for chromosome C banding, it was found that the constitutive heterochromatin was in the centromeric regions of the chromosomes.