This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 6 Molecular Basis Of Inheritance – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 6 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The prime objective of HGP was A) To find out the exact functions of proteins in humans. B) To sequence the entire base pairs that makes up the 23 chromosomes. C) To sequence the entire base pairs that makes up the 24 chromosomes. D) To find out the active genes in human genome. Show Answer Correct Answer: C) To sequence the entire base pairs that makes up the 24 chromosomes. 2. The ..... contains ..... A) Leading Strand / Okazaki Fragments. B) Lagging Strand / Okazaki Fragments. C) Leading Strand / Topoisomerase. D) Lagging Strand / dispersive replication. Show Answer Correct Answer: B) Lagging Strand / Okazaki Fragments. 3. Which scientist confirmed the DNA is genetic material? A) Chargraff. B) Crick. C) Hershey. D) Levene. Show Answer Correct Answer: C) Hershey. 4. Which is not found in RNA A) Thymine. B) Uracil. C) Guanine. D) Cytosine. Show Answer Correct Answer: A) Thymine. 5. During translation, activated amino acids get linked to tRNA. This process is commonly called as A) Charging of tRNA. B) Discharging of tRNA. C) Aminoacylation of tRNA. D) Both (a) and (c). Show Answer Correct Answer: B) Discharging of tRNA. 6. If the distance between two consecutive base pairs is 0.34nm and the total number of base pairs of a DNA double helix in a typical mammalian cell is $6.6\times10^9$ A) 2.2 meters. B) 2.5 meters. C) 2.7 meters. D) 2.0 meters. Show Answer Correct Answer: A) 2.2 meters. 7. The chain-terminating codon is A) AUG. B) CCC. C) UAG. D) GGG. Show Answer Correct Answer: C) UAG. 8. RRNA is the least abundant RNA. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 9. Which scientists used X-ray crystallography to determine the helical structure of DNA? A) Watson & Crick. B) Hershey & Chase. C) Meselson & Stahl. D) Franklin & Watkins. Show Answer Correct Answer: D) Franklin & Watkins. 10. The strand of DNA, which does not code for anythingis referred to as:- A) Template strand. B) Antisense strand. C) Coding strand. D) Noncoding strand. Show Answer Correct Answer: D) Noncoding strand. 11. Which of the following is Circular DNA-(D) All A) Mitochondrial DNA. B) Chloroplast DNA. C) Plasmid DNA. D) All. Show Answer Correct Answer: D) All. 12. 3'-ATGCATGCATGCATGCATGCATGC-5' Template Strand find the coding strand? A) 5'-TACGTACGTACGTACGTACGTACG-3' Coding Strand. B) 5'-TACGTACGTACGTACGTACGTAGC-3' Coding Strand. C) 5'-TACGTACGTACGTACGTACGATCG-3' Coding Strand. D) 5'-TACGTACGTACGTACGTACGTCAG-3' Coding Strand. Show Answer Correct Answer: A) 5'-TACGTACGTACGTACGTACGTACG-3' Coding Strand. 13. Which of the following statements accurately describes the structure of a eukaryotic chromosome? A) It is a single linear molecule of double-stranded DNA plus proteins. B) It has different numbers of genes in different cell types of an organism. C) It is composed of a single strand of DNA. D) It is constructed as a series of nucleosomes wrapped around two DNA molecules. Show Answer Correct Answer: A) It is a single linear molecule of double-stranded DNA plus proteins. 14. In 1868 DNA was discovered by the Swedish biochemist A) Feulgen. B) Luria. C) Mirsky. D) Friedrich Miescher. Show Answer Correct Answer: D) Friedrich Miescher. 15. The satellite DNA used in DNA fingerprinting consists of: A) Highly conserved sequences. B) Variable Number of Tandem Repeats (VNTR). C) Protein coding sequences. D) Ribosomal RNA genes. Show Answer Correct Answer: B) Variable Number of Tandem Repeats (VNTR). 16. The first genetic material could have been A) Protein. B) Cabohydrates. C) DNA. D) RNA. Show Answer Correct Answer: D) RNA. 17. What are dimensions of DNA molecule A) 3.4 A, 0.34 A, 20 A. B) 3.4 nm, 0.34nm, 20nm. C) 3.4 m, 0.34 m, 20m. D) All of these. Show Answer Correct Answer: B) 3.4 nm, 0.34nm, 20nm. 18. Out of 64 codons, the number of codons with GGG is A) 1. B) 2. C) 4. D) 6. Show Answer Correct Answer: A) 1. 19. One strand of a DNA molecule has the base sequence 5'-ATAGGT-3'. The complementary base sequence on the other strand of DNA will be 3' ..... 5'. A) ATAGGT. B) TGGAUA. C) TGGATA. D) TATCCA. Show Answer Correct Answer: D) TATCCA. 20. The purine binds with pyrimidine which result in A) Uniform distance between two strands. B) Zig-zag arrangement between two strands. C) Irregular distance between two strands. D) None of the above. Show Answer Correct Answer: A) Uniform distance between two strands. 21. What is nucleosome? A) A vesicle containing positively charged histones within nucleolus. B) They are similar to endosomes. C) A structure formed by wrapping of negatively charged DNA around positively charged histone octamer. D) They are the transforming principles discovered by Griffith. Show Answer Correct Answer: C) A structure formed by wrapping of negatively charged DNA around positively charged histone octamer. 22. If the base sequence of a codon in mRNA is 5'-AUG-3', the sequence of tRNA pairing with it must be: A) 5'-UAC-3'. B) 5'-CAU-3'. C) 5'-AUG-3'. D) 5'-GUA-3'. Show Answer Correct Answer: B) 5'-CAU-3'. 23. Replication is continuous in A) The leading strand. B) The lagging strand. C) The strand where okazaki fragments are present. D) Both the strands. Show Answer Correct Answer: A) The leading strand. 24. Why does the DNA double helix have a uniform diameter? A) Purines pair with pyrimidines. B) C nucleotides pair with A nucleotides. C) Deoxyribose sugars bind with ribose sugars. D) Nucleotides bind with nucleoside triphosphates. Show Answer Correct Answer: A) Purines pair with pyrimidines. 25. In lac operon the i gene codes for A) Inducer of lac operon. B) Repressor of lac operon. C) Hydrolysis of Disaccharide. D) Permease. Show Answer Correct Answer: B) Repressor of lac operon. ← 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 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 10Class 12 Biology Chapter 6 Molecular Basis Of Inheritance Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books