CBSE 2024 · Region 4 · Set 1 · Q27 · 3 marks
Study the steps shown below, that are carried during a specific technique :
(a)Identify the steps 'A' and 'D' in the diagram.(b)What does 'B' represent ?(c)Write what is 'C'? Name its source organism.(d)Mention the use of this technique in molecular diagnostics.
Study the steps shown below, that are carried during a specific technique :
(a)
Identify the steps 'A' and 'D' in the diagram.
(b)
What does 'B' represent ?
(c)
Write what is 'C'? Name its source organism.
(d)
Mention the use of this technique in molecular diagnostics.
Marking-scheme solution
(a)
A- Denaturation , D- Extension
(b)
B- Primers
(c)
C- Taq polymerase , Source- Thermus aquaticus
(d)
Use- Detection of AIDS/Cancer/ Genetic disorder/ Amplification of
mutated gene/ Early diagnosis of disease
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CBSE Class 12 Biology past-paper question from the 2024board exam, with the answer as CBSE’s own marking scheme gives it. Where our answers come from.