- Informationprocessingsystems--Fibredistributeddatainterface(FDDI)--Part1:Tokenringphysicallayerprotocol(PHY)Forinstance,toensurereliabilityofthewirelesslink,MACandPHYworktogethertodetermineifaclearpathexistsbeforetheystartatransmission."Processdatah...
- 4112
- 问题详情: 植*酶能提高饲料中*的利用率,减少*随畜禽粪便排出量,进而降低环境污染。科学家试图将黑曲霉植*酶基因(phyA)转入猪细胞中,以培育出转植*酶基因猪。下图为实验过程中基因表达载体的构建过程,图中A、A1,B、B1表示引物,NheⅠ(G↓CTAGC),XhoⅠ(G↓TCGAG)为限制酶。请问...
- 31907