white leghorn造句

• Two of these were red junglefowl from a local zoo ( all domestic chickens were originally bred from red junglefowl at least 5 , 000 years ago ) ; two were white leghorn chickens ( a modern farmyard variety )
  其中两组是当地动物园中的红原鸡（所有家养鸡类都是其后代，红原鸡已存在至少五千年） ，另两组是白来亨鸡（现代家养鸡） 。
• ( 2 ) we searched for snps in 7 exons and intron 6 of tyrp1 by pcr and sequencing using genomic dna from 4 breeds . they are silky , white leghorn , blue shell layer and shouguang . there are 2 snps in intron 6
  ( 2 )在丝羽乌骨鸡、白莱航鸡、绿壳蛋鸡和寿光鸡的tyrp1的7个外显子和内含子6中寻找snp ，比较pcr产物测序结果，只在内含子6中发现两个snp 。
• Observation of chicken phenotype and rt - pcr results of tyrp1 expression in 8 day , 16 day embryos and 2 day hatched chicken also showed that melanin accumulation was appeared after detection of tyrp1 in silky . meanwhile , tyrpi expression was only detected in eyes of white leghorn ( except for kidney ) , the only tissue where melanin exists
  Rt - pcr检测白莱航和乌骨鸡的8天、 16天胚胎和出生后2天各组织的tyrp1表达，结合对表型的观察发现，乌骨鸡各组织中黑色素的沉积随tyrp1的表达出现，而白莱航(除肾脏外)只在有黑色素沉积的眼睛中表达tyrp1 ，其他组织既无tyrp1的表达也无黑色素沉积。