Biology : Biotechnology and Its Applications

Write the steps you would suggest to be undertaken to obtain a foreign-gene-product.

Why do lepidopterans die when they feed on Bt cotton plant? Explain how does it happen.

What are Cry genes ? In which organism are they present ?

Explain the various steps involved in the production of artificial insulin.

Mention the chemical change that proinsulin undergoes, to be able to act as mature insulin.

Which of the following is not required for any of the techniques of DNA fingerprinting available at present?

• Zinc finger analysis

• Restriction enzymes

• DNA-DNA hybridization

• DNA-DNA hybridization

Which part of the tobacco plant is infected by Meloidogyne incognitia?

• Leaf

• Stem

• Root

• Root

Golden rice is a genetically modified crop plant where the incorporated gene i's meant for

• Vitamin B

• Vitamin C

• Omega 3

• Omega 3

A pleiotropic gene

• is expressed only in primitive plants.

• is a gene evolved during Pliocene

• controls a trait only in combination with another gene

• controls a trait only in combination with another gene

Green revolution in India occurred during

• 1960's

• 1970's

• 1980's

• 1980's