Text written in Basque and translated automatically by Elia without any subsequent editing. SEE ORIGINAL
Mammal with four cell chromosomes
1999/11/01 Elhuyar Zientzia Iturria: Elhuyar aldizkaria
Mammals are diploid, that is, we have all chromosomes repeated twice in all cells. Otherwise, it is usually a harmful genetic mutation, such as polyploidia, the trisomy of the human chromosome 21. Researchers have discovered the exception of this genetic standard: Tympanoctomys Barrerae.
The small rodent of the Argentine desert is a tetraploid with four repetitions of chromosomes. The researchers do not know the causes of this peculiarity.
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