为探明金黄色乌鳢体色的遗传规律,以野生型乌鳢和金黄色乌鳢为亲本,设计了野生型乌鳢、金黄色乌鳢自交试验;野生型乌鳢与金黄色乌鳢正、反交试验及其F1代自交、F1代与金黄色乌鳢测交等试验。对不同试验组合子代群体的体色表型进行了统计和分析,结果发现正、反交试验F1代体色全部表现为灰黑色,F2代体色出现分离且灰黑色与金黄色数量符合孟德尔3:1的分离比例。测交后代体色灰黑色和金黄色数量符合1:1的分离比例。结果表明金黄色乌鳢为野生型乌鳢的隐性突变体,体色由常染色体上1对等位基因突变导致。In order to investigate the inheritance of body color of golden C. argus, wild-type C. argus (gray-black body color and black eye color) and golden C. argus (golden or light yellow body color and red eye color) were used as parents;the self-cross test of wild-type C. argus and golden C. argus, and the reciprocal cross test of wild-type C. argus and golden C. argus, F1 generation (reciprocal cross) self-cross, F1 generation and golden C. argus (test cross) were designed and carried out. The number of body color of progenies in different test groups were counted and analyzed. It is found that the progenies of wild-type C. argus and golden C. argus (reciprocal crosses) all showed gray-black body color, and the F1 generation of reciprocal crosses selfed, and the ratio of gray-black body color to golden body color of the offspring was to 3:1, the ratio of gray-black body color to golden body color of F1 generation and golden C. argus test cross progeny was to 1:1. The results showed that golden C. argus is a recessive mutant of the wild-type C. argus, and its body color is controlled by a pair of recessive genes on the autosomes.
