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阔尾鳉鱼在正常情况下,具XX性染色体者为雌鱼,具XY性染色体者为雄鱼。而控制体色的一对R、r基因与性染色体连锁着。研究者育成的雌鱼(X~rX~r)为白色,雄鱼(X~rY~R)为橙红色(为叙述方便以下简称为红色—译者)的这样的系统,用于性分化的研究。这一系统可以根据体色鉴别它们遗传上的雌(X X)、雄(X Y),因此是很好的研究材料。将此系统用来制作了性反转的材料:本来应发育成雄鱼(X Y)的鱼通过性反转育成了具有卵巢的完全雌鱼;本来应发育成雌鱼(X X)的鱼通过性反转
In the normal case, the catfish with XX sex chromosomes are female and the XY sex chromosomes are male. The control body color of a pair of R, r genes and sex chromosomes linked. The female bred by the researcher (X ~ rX ~ r) is white and the male (X ~ rY ~ R) is an orange-red system (for ease of description, hereinafter referred to simply as RED- the study. This system allows the identification of their genetic female (X X) and male (X Y) based on body color and is therefore a good source of research material. The system was used to make sex-reversed materials: fish that would otherwise have developed into male fish (XY) developed complete female with ovary by sexual inversion; fish that would otherwise develop into female (XX) turn