AIIMS Zoology Biotechnology Principles And Processes Class 12 Questions

Chimeric DNA is

In Ti⁻plasmid, which of the following is removed:

Assertion: Somaclonal variations produce slight differences in plant Reason: In bacteria, transcription and translation occurs in cytoplasm

The assertion statement is true that ‘Baculovirus can be used to control the population of nucleopolyhedrovirus, but the reason saying that ‘they are effective against plant pathogens’ is not the correct explanation for assertion.

The process of gene cloning becomes possible with the help of recombinant DNA technology. It is a process in which isolation and insertion of gene of interest is carried out in different organisms.

Assertion: DNA fingerprinting is applied in paternity testing in case of disputes. Reason: It employs the principle of polymorphism in DNA sequences as the polymorphisms are inheritable from parent to children.

Choose the statement.

The first clinical gene therapy was given for treating

Biolistic (gene gun) is suitable for

Apiculture is associated with which of the following groups of plants?

What is the source of Eco R I?

What is a plasmid?

Recombinant DNA technology involves several steps in which initial step is of isolation of the DNA. Which enzymes are used in the process for the break down of fungal cell, plant cell and bacterial cell respectively?

Assertion: Restriction enzymes cut the strand of DNA to produce sticky ends. Reason: Stickiness of the ends facilitates the action of the enzyme DNA polymerase.

Somaclonal variation is seen in

Which one of the following is a correct statement?

A tumor inducing plasmid widely used in the production of transgenic plants is that of:

Electroporation procedure involves:

Somaclonal variation appears in

cDNA probes are copied from the messenger RNA molecules with the help of

Assertion : In recombinant DNA technology, human genes are often transferred into bacteria (prokaryotes) or yeast (eukaryote). Reason : Both bacteria and yeast multiply very fast to form huge populations which express the desired gene.

Somaclonal variation can be obtained by

Restriction enzymes:

Assertion : In plant tissue culture, somatic embryos can be induced from any plant cell. Reason : Any viable plant cell can differentiate into somatic embryos.

Introduction of foreign genes for improving genotype is

Assertion : Plasmids are single stranded extra-chromosomal DNA. Reason : Plasmids are possessed by eukaryotic cells.

Which of these are most widely used in Genetic Engineering?