Samollow P B, Dawson P S, Riddle R A
Biochem Genet. 1983 Feb;21(1-2):167-76. doi: 10.1007/BF02395401.
The tenebrionid beetles Tribolium castaneum and T. confusum are representative of two distinct species groups within their genus. It has been suggested [Smith, S.G. (1952). J. Morphol. 91:325] that the 8AA + neo-XY karyotype of T. confusum was derived from the ancestral 9AA + XY formula, still present in T. castaneum, via the fusion of one pair of autosomes with the X and Y chromosomes during the early divergence of the confusum and castaneum species groups. In the present paper, electrophoretic variation in malic enzyme and hexokinase-1, detected in laboratory strains in Tribolium, is described. Evidence is presented that the genes encoding variation in both enzymes are autosomal in T. castaneum but are X linked in T. confusum. These species-specific patterns of inheritance of homologous gene loci are consistent with the hypothesized karyotypic history of the genus.
拟步甲科甲虫赤拟谷盗（Tribolium castaneum）和杂拟谷盗（T. confusum）代表了其属内两个不同的物种组。有人提出[史密斯，S.G.（1952年）。《形态学杂志》91:325]，杂拟谷盗的8AA + neo-XY核型是在杂拟谷盗和赤拟谷盗物种组早期分化过程中，通过一对常染色体与X和Y染色体融合，从仍存在于赤拟谷盗中的祖先9AA + XY模式衍生而来。在本文中，描述了在拟谷盗实验室菌株中检测到的苹果酸酶和己糖激酶-1的电泳变异。有证据表明，在赤拟谷盗中编码这两种酶变异的基因是常染色体基因，但在杂拟谷盗中是X连锁基因。同源基因座的这些物种特异性遗传模式与该属假设的核型历史一致。
