Biology : Biotechnology and Its Applications

In which of the following, determination of order of bases in a DNA molecule takes place

• Gene probing

• Gene splicing

• Gene mapping

• Gene sequencing

During 'gene cloning', which is called 'gene taxi' ?

• Plasmid

• Protozoa

• Vaccine

• Bacterium

Flavr savr variety of tomato is a

• mutated form

• somaclonal variety

• transgenic crop

• high yielding variety

In genetic engineering, which of the following is used?

• Plasmid

• Plastid

• Mitochondria

• ER

Which one of the following bacteria has found extensive use in genetic engineering work in plants?

• Bacillus coagulens

• Agrobacterium tumefaciens

• Bacillus subtilis

• E. coli

Vaccines prepared by genetic engineering are safe to man because they are

• least active form of virus

• active form of virus

• coat protein formed as antibody

• All of the above

The principal cereal crop of India/Asia is :

• Sorghum

• barley

• wheat

• rice

Major coffee producing state of India is :

• Tamil Nadu

• Kerala

• Karnataka

• Andhra Pradesh

A student wants to study metaphasic behaviour of chromosomes in a living cell. The technique most suitable is :

• phase contrast microscope

• x-ray microscope

• cell fractionation

• scanning electron microscope

Which statement is incorrect ?

• Plant viruses contain RNA

• Animal viruses contain DNA

• T₄ contains double strand DNA

• TMV contains double stranded RNA