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Biotechnology - 14

1-	T-DNA transfer and processing into plant genome requires products of which of the following genes?
	A -	vir A,B
	B -	vir G,C
	C -	vir D,E
	D -	All of these
2-	Because of large size of Ti-plasmid, intermediate vectors (IV) are developed in which T DNA has been subcloned into
	A -	pBR 322 based plasmid vector
	B -	pRK 2013
	C -	pRN 3
	D -	All of these
3-	The transfer of intermediate vectors into Agrobacterium are brought about by
	A -	transformation
	B -	biparental mating
	C -	triparental mating
	D -	transduction
4-	In response to the activating signal molecule, an endonuclease is produced that causes nicks in the T-DNA. It is encoded by
	A -	vir A
	B -	vir C
	C -	vir B
	D -	vir D
5-	Microinjection involves
	A -	injection of large amount of DNA
	B -	injection of DNA into bigger cells
	C -	injection with needle having diameter greater than cell diameter
	D -	All of the above
6-	Which of the following are used as selection marker for the cells transformed with Agrobacterium?
	A -	Neomycin phosphotransferase
	B -	Streptomycin phosphotransferase
	C -	Hygromycin phosphotransferase
	D -	Any of the above
7-	Vir genes required for the T-DNA transfer and processing are located
	A -	on the T-DNA
	B -	outside the T-DNA region
	C -	on the plant genome
	D -	None of these
8-	Plant transformation vectors based on Agrobacterium can generally be divided into
	A -	two vectors
	B -	four vectors
	C -	six vectors
	D -	eight vectors
9-	Which of the following has been confirmed on sugarcane genotypes?
	A -	Bacilliform virus
	B -	Cytomegalovirus
	C -	Varicella-zoster virus
	D -	Erythrovirus
10-	Involvement of sugarcane phytoalexins in red-hot resistance has been observed. The phytoalexin compound is reported to be
	A -	3-deoxyanthocyanidin
	B -	luteolinidin
	C -	apigeninidin
	D -	5-0 apigeninidin

[Người đăng: Thành Lãm - ST]

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