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Biotechnology : Principles and Processes

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Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12

The genetically - modified (GM) brinjal in India has been developed for 

  • insect - resistance

  • enhancing self- life

  • enhancing mineral content

  • drought - resistance


A.

insect - resistance

The genetically modified brinjal or Bt brinjal has the same Cry - LAC gene from Bacillus thuringiensis as cotton. The gene from Bacillus thuringiensis as cotton. The gene is supposed to make the plant tolerant to the shoot and fruit borer insect, which attacks it throughout its life cycle.

The genetically modified brinjal or Bt brinjal has the same Cry - LAC gene from Bacillus thuringiensis as cotton. The gene from Bacillus thuringiensis as cotton. The gene is supposed to make the plant tolerant to the shoot and fruit borer insect, which attacks it throughout its life cycle.

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Define recombinant DNA.

Recombinant DNA is the artificially created DNA which incorporates DNA segments from different sources into one.
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What are BACs and YACs ?

BACs and YACs are artificial chromosomes from bacteria and yeast used for efficient gene transfer and gene sequencing.
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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 
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Name the soil bacterium which contain gene for production of endotoxins.

Bacillus thuringiensis.
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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.

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