The GATE Grind

GATE Genetics, Cellular and Molecular Biology: Molecular Biology: Structure of genes and chromosomes, mutations and mutagenesis, regulation of gene expression – Previous Year Questions

9 GATE previous year questions on Molecular Biology: Structure of genes and chromosomes, mutations and mutagenesis, regulation of gene expression (Genetics, Cellular and Molecular Biology, Biotechnology) with answers and explanations, from every paper.

  1. GATE 2023 BT Q15 (1 mark, Multiple choice) – C-value paradox refers to
  2. GATE 2023 BT Q39 (2 marks, Multiple select) – The event(s) that lead(s) to inactivation of tumor suppressor genes in cancer cells is(are)
  3. GATE 2023 BT Q40 (2 marks, Multiple select) – Methylation of CpG islands near the promoter of a gene can inhibit transcription by
  4. GATE 2023 BT Q55 (2 marks, Numerical answer) – DNA sample collected from an unidentified bacterial species (Y) contains 13% of adenine. The G+C content (in percentage) of Y is .
  5. GATE 2023 BT Q56 (2 marks, Numerical answer) – If 1000 bp of double-helical DNA weighs 110-18 g and the distance between two bp is 0.34 nm, the DNA mass (mg, one decimal place) required to stretch…
  6. GATE 2026 BT Q43 (2 marks, Multiple select) – The RNA sequence below depicts the part of a 330 nucleotides long mRNA and it encodes the C-terminal portion of a protein. 5'-… … … AAC ACC ACG ACC…
  7. GATE 2026 BT Q48 (2 marks, Multiple select) – Which of the following is/are posttranslational modification(s) involved in epigenetic control of gene expression?
  8. GATE 2025 BT Q31 (1 mark, Numerical answer) – The contour length of a B-DNA molecule that encodes a bacterial protein of 33 kDa is nm. Consider the average molecular weight of an amino acid as 110…
  9. GATE 2024 BT Q27 (1 mark, Multiple choice) – All pseudogenes DO NOT code for a .