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早在1898年 William Bateson 就开始用具有不同羽色,不同品种的鸡相互杂交进行遗传学的研究,阐明动物也和植物一样符合孟德尔的遗传法则。随后,很多育种家根据不同羽毛的遗传规律,将其所需求的羽色固定到所培育的新品种(或品系)中去,并确知羽色和生长存在着互相制约的关系。在毛色遗传研究的新领域中,曾发现“I”(显性白色),“E”(黑色素扩散)和“B”(横斑)三个基因可相互影响而抑制鸡的生长。在8周龄时,借“I”和“E”的相互作用,可使体重下降1.5%,若再加上“B”
As early as 1898, William Bateson began the genetic study of crossbreeding of different breeds of chickens with different plume colors, demonstrating that animals conform to Mendel’s laws of gene as well as plants. Subsequently, many breeders fixed their desired plume color to new cultivars (or lines) according to the genetic laws of different feathers and found that there was a mutually restrictive relationship between plumage and growth. In the new field of coat color genetic research, it has been found that the three genes “I” (dominant white), “E” (melanin proliferation) and “B” (transverse cuticle) can interact to inhibit the growth of chickens. By 8 weeks of age, by the “I” and “E” interaction, can make the body weight decreased by 1.5%, if coupled with “B”