Zigya Logo

Chapter Chosen

Biotechnology : Principles and Processes

Book Chosen

Biology

Subject Chosen

Biology

Book Store

Download books and chapters from book store.
Currently only available for.
CBSE Gujarat Board Haryana Board

Previous Year Papers

Download the PDF Question Papers Free for off line practice and view the Solutions online.
Currently only available for.
Class 10 Class 12

Maximum number of existing transgenic animals is of 

  • mice 

  • cow

  • pig

  • fish


A.

mice 

animals that have had their DNA manipulated to possess and express an extra (foreign) gene are known as transgenic animals. e.g, rats,rabbits, pig, sheep, cows, fish etc. Over 95% of all eisting transgenic animals are mice.

animals that have had their DNA manipulated to possess and express an extra (foreign) gene are known as transgenic animals. e.g, rats,rabbits, pig, sheep, cows, fish etc. Over 95% of all eisting transgenic animals are mice.


Define recombinant DNA.

Recombinant DNA is the artificially created DNA which incorporates DNA segments from different sources into one.

What are BACs and YACs ?

BACs and YACs are artificial chromosomes from bacteria and yeast used for efficient gene transfer and gene sequencing.

What is the role of restriction endonuclease ?

Restriction endonucleases are specific enzymes which can cleave double stranded DNA at specific sites called recognition sequences. Restriction endonucleases provide protection to the bacteria by restricting the growth of bacteriophages. They also serve as tools for Recombinant DNA technology.


Name the soil bacterium which contain gene for production of endotoxins.

Bacillus thuringiensis.

What is genetic engineering ?

Genetic engineering is a technique for artificially and deliberately modifying DNA (genes) to suit human needs. It is used to change the genetic makeup of the cells by using Recombinant DNA technology