Same subject1 mark
Answer the following questions briefly.
Renu was conducting an experiment. She started with a single DNA strand and
ran six cycles of PCR to produce number of molecules of DNA.
2026
Study the diagram given below and answer the questions that follow.
(a) Name the molecule ‘X’ synthesised by ‘I’ gene. How does this molecule
get inactivated?
(b) Name the enzymes coded respectively by genes- z, y, and a.
(c) Which enzyme binds to the operator to initiate transcription?
Specimen paper · 2026 · CollegeDekho (mirror of CISCE PDF)
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