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SUMMARY
The karyotype of Hemiechinus auritus collaris consists of 48 chromosomes comprising 16 pairs of submetacentric, 5 pairs of metacentric, 2 pairs of « minute » metacentric and a pair of metacentric sex chromosomes, X and Y.
The chiasma frequency is calculated to be 39.13 ± 0.324 at diakinesis and 36.50 ± 0.290 at metaphase-I. The terminalization coefficient at these stages is 0.76 and 0.94 respectively.