The lowest diploid chromosomal number in mammals.[11] [12] Hieracium 8 Fruit fly (Drosophila melanogaster) 8 6 autosomal and 2 allosomic (sex) [13] Macrostomum lignano (Macrostomum lignano) 8 [14] Thale cress (Arabidopsis thaliana) 10 Swamp wallaby (Wallabia bicolor) 10/11 11 for male, 10 for female [15] Nematode (Caenorhabditis elegans) 12/11 12 for hermaphrodites, 11 for males Spinach (Spinacia oleracea) 12 [16] Broad bean (Vicia faba) 12 [17] Yellow dung fly (Scathophaga stercoraria) 12 10 autosomal and 2 allosomic (sex) chromosomes. Males have XY sex chromosomes and females have XX sex chromosomes.