NEET Biology question

BiologyBiotechnology: Principles and ProcessesNEET

Study the following statements regarding recombinant DNA technology and select the incorrect ones. 1. Taq polymerase extends the primers using the nucleotides provided in the reaction. 2. In genetic engineering, antibiotics are used as sequences from where replication starts. 3. DNA fragments are separated according to their charge only, in agarose gel electrophoresis. 4. Transformation is a procedure through which a piece of DNA is integrated into the genome of a host bacterium. 5. Bioreactors biologically convert raw materials into specific products by microbes, plant or animal cells, etc. 6. Downstream processing is one of the steps of the polymerase chain reaction.

Answer: (A)

Solution

Statements 1, 4 and 5 are factually correct descriptions of Taq polymerase, transformation and bioreactors respectively, whereas statement 2 is false (antibiotic resistance genes serve as selectable markers, not origin-of-replication sequences), statement 3 is

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Question ID VK-125286