This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 6 Molecular Basis Of Inheritance – Quiz 16 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 16 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The chain initiating codon is A) AUG. B) UAG. C) UAA. D) UUA. Show Answer Correct Answer: A) AUG. 2. Which of the following best represents the Central Dogma? A) DNA $\rightarrow$ RNA $\rightarrow$ proteins. B) RNA $\rightarrow$ DNA $\rightarrow$ proteins. C) DNA $\rightarrow$ proteins $\rightarrow$ RNA. D) Proteins $\rightarrow$ RNA $\rightarrow$ DNA. Show Answer Correct Answer: A) DNA $\rightarrow$ RNA $\rightarrow$ proteins. 3. In history of biology, HGP led to the development of ..... A) Biotechnology. B) Biomonitoring. C) Biosystematics. D) Bioinfomatics. Show Answer Correct Answer: D) Bioinfomatics. 4. Statement which is incorrect on Polyadenylation is A) Independent on the DNA template. B) 200-300 adenine chain is added as a tail. C) It occurs in the 3' end of the mRNA. D) None of the above. Show Answer Correct Answer: D) None of the above. 5. What is common between Purine and pyrimidine A) Rings. B) The positions. C) Nitrogen. D) No of members. Show Answer Correct Answer: C) Nitrogen. 6. Supercoiling in DNA is removed by A) Helicase. B) Gyrase. C) Ligase. D) Polymerase. Show Answer Correct Answer: B) Gyrase. 7. Which of the following investigators was (were) responsible for the discovery that in DNA from any species, the amount of adenine equals the amount of thymine, and the amount of guanine equals the amount of cytosine? A) Oswald Avery, Maclyn McCarty, and Colin MacLeod. B) Erwin Chargaff. C) Matthew Meselson and Franklin Stahl. D) Alfred Hershey and Martha Chase. Show Answer Correct Answer: B) Erwin Chargaff. 8. RNA can also be converted into DNA A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 9. The molecules that function to replicate DNA in the cell are A) DNA nucleoside triphosphates. B) DNA polymerases. C) Nucleoside polymerases. D) DNases. Show Answer Correct Answer: B) DNA polymerases. 10. To initiate translation, the mRNA first binds to A) The smaller ribosomal sub-unit. B) The larger ribosomal sub-unit. C) The whole ribosome. D) No such specificity exists. Show Answer Correct Answer: A) The smaller ribosomal sub-unit. 11. How many base pairs present in core of nucleosome? A) 146. B) 200. C) 156. D) 300. Show Answer Correct Answer: A) 146. 12. What is the complementary DNA strand for 5'-ATGCATGC-3'? A) 3'-ATGCATGC-5'. B) 5'-TACGTACG-3'. C) 3'-TACGTACG-5'. D) 5'-ATGCATGC-3'. Show Answer Correct Answer: C) 3'-TACGTACG-5'. 13. A particular triplet of bases in the template strand of DNA is 5' AGT 3'. The corresponding codon for the mRNA transcribed is A) 3' ACU 5'. B) 3' UGA 5'. C) 3' UCA 5'. D) 5' TCA 3'. Show Answer Correct Answer: C) 3' UCA 5'. 14. Who performed classic experiments that supported the semiconservative model of DNA replication? A) Watson and Crick. B) Meselson and Stahl. C) Hershey and Chase. D) Jacob and MonodTagsDNA replication experimentsMeselson/Stahl experiment. Show Answer Correct Answer: B) Meselson and Stahl. 15. DNA duplex shows A) Left handed and parallel coiling. B) Left handed and antiparallel coiling. C) Right handed and parallel coiling. D) Right handed and antiparallel coiling. Show Answer Correct Answer: D) Right handed and antiparallel coiling. 16. Inverse transcription was discovered by:- A) Watson and Crick. B) Khorana. C) Temin an Baltimore. D) Meischer. Show Answer Correct Answer: C) Temin an Baltimore. 17. What is the primary function of DNA ligase in DNA replication? A) Unwinds the DNA helix. B) Joins Okazaki fragments. C) Synthesizes RNA primers. D) Proofreads newly synthesized DNA. Show Answer Correct Answer: C) Synthesizes RNA primers. 18. Semiconservative model A) Each new DNA molecule consists of one strand from the original molecule and one newly synthesized strand. B) Each new DNA molecule consists of one newly synthesized strand and one RNA strand. C) Each new DNA molecule consists of one strand from the original molecule and one strand from a different molecule. D) Each new DNA molecule consists of two newly synthesized strands. Show Answer Correct Answer: A) Each new DNA molecule consists of one strand from the original molecule and one newly synthesized strand. 19. How many base pairs present in linker DNA? A) 54. B) 60. C) 55. D) 58. Show Answer Correct Answer: A) 54. 20. In retro virus which type of DNA is found A) Single stranded haploid RNA. B) Single stranded diploid DNA. C) Single stranded triploid DNA. D) Double stranded RNA. Show Answer Correct Answer: B) Single stranded diploid DNA. 21. What is the main difference between DNA and RNA in terms of stability? A) DNA is more stable than RNA. B) RNA is more stable than DNA. C) DNA is less reactive than RNA. D) RNA is less reactive than DNA. Show Answer Correct Answer: B) RNA is more stable than DNA. 22. Which of the following features of genetic code allows bacteria to produce human insulin by recombinant DNA technology? A) Genetic code is nearly universal. B) Genetic code is specific. C) Genetic code is not ambiguous. D) Genetic code is redundant. Show Answer Correct Answer: A) Genetic code is nearly universal. 23. An mRNA ready for translation would have A) Introns, coding exons and non-coding exons. B) Coding exons and non-coding exons. C) Only coding exons. D) Only coding exons and introns. Show Answer Correct Answer: C) Only coding exons. 24. In a virus, the percentage of thymine was 21%, adenine 32%, cytosine 23% and guanine 24% in its genetic material. The nature of genetic material present in this virus is A) Ds DNA. B) Ss DNA. C) Ss RNA. D) Ds RNA. Show Answer Correct Answer: B) Ss DNA. 25. A DNA nucleotide contains all of the following, except ..... A) Deoxyribose. B) Phosphate group. C) Nitrogenous base. D) CholesterolTagsDNA Structure. Show Answer Correct Answer: D) CholesterolTagsDNA Structure. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 1Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 2Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 3Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 4Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 5Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 6Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 7Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 8Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 9Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books