Search for: [Description = "Conventional and differential staining revealed that the kariotype of Eptesicus serotinus \(Schreber, 1774\) from the Białowieża population consists of 24 pairs of telocentric autosomes. Only sex chromosomes have two arms\; the X\-chromosome is submetacentric and similar in size to that of the largest pair of autosomes, while the Y\-chromosome is submetacentric and of the size of the two smallest pairs of autosomes."]