Q20 of 42 Page 1

Expand ‘BAC’ and ‘YAC’. What are they and what is the purpose for which they are used?

• BAC: Bacterial Artificial Chromosomes.


• YAC: Yeast Artificial Chromosomes.


• Function: They are commonly used as host and act as vectors for sequencing the DNA.


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(a) Mention the importance of gel-electrophoresis in biotechnology.

(b) Explain the process of this technique.


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(b) How do deforestation and green house gases negatively affect our environment? Explain.


OR


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