The controversy regarding the use of Bt-corn is that it:
A) Is potentially harmful to monarch butterflies
B) Is a potential allergen to humans
C) Both (A) and (B)
D) Can contaminate groundwater
The encapsulation of somatic embryos is carried out by:
A) Automatic encapsulation process
B) Gel complexation
C) Both (A) and (B)
D) Coating proteins
Cosmids lack:
A) Genes coding for viral proteins
B) Origin of replication
C) Marker genes coding for replication
D) Cleavage site for the insertion of foreign DNA
Single stranded vectors are useful:
A) For sequencing of cloned DNA
B) For oligonucleotide directed mutagenesis
C) For probe preparation
D) All of the above
Phagemid vectors are:
A) Combination of plasmid and phage
B) Combination of phages and cosmid
C) Phages carrying properties of plasmids
D) All of the above
Conjugative plasmids:
A) Exhibit antibiotic resistance
B) Do not exhibit antibiotic resistance
C) Carry transfer genes called the tra genes
D) Do not carry transfer genes

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