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THE KARYOTYPE OF THE LONG TAILED WEASEL MUSTELA FRENATA NOVEBORACEISSIS EMMONS

1968; NRC Research Press; Volume: 10; Issue: 2 Linguagem: Inglês

10.1139/g68-052

0008-4093

Parvathi K. Basrur,

Chromosomal and Genetic Variations

The somatic chromosomes of the long tailed weasel, Mustela frenata from Southern Ontario were studied using tissue culture methods. The autosomes include 11 pairs of biarmed elements ranging from 2.0 to 8.15 in per cent total complement length and 9 pairs of single armed elements ranging from 3.2 to 5.00. Five of the biarmed chromosomes are metacentrics (M) ranging in arm ratio from 1.2 to 1.35 and the remaining six are submetacentrics (S) varying in arm ratio from 1.7 to 3.5. The sex chromosomes are biarmed, the X being the second smallest of the S series, whereas the Y is the smallest.