VITEEE Molecular Basis of Inheritance — practice questions
36 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice VITEEE Molecular Basis of Inheritance in the app →DNA was first identified as an acidic substance in the nucleus by:In the Watson-Crick double helix, adenine pairs with thymine via how many hydrogen bonds?In a DNA molecule with 20% cytosine, what is the percentage of adenine?In the Watson-Crick model, the two polynucleotide strands of DNA are:The pitch of the DNA double helix is approximately:Two adjacent nucleotides in a polynucleotide chain are joined by:The chemical difference between DNA and RNA includes:In eukaryotes, the histone octamer around which DNA is wrapped to form a nucleosome consists of:Histones are positively charged because they are rich in:A typical nucleosome contains approximately how many base pairs of DNA?Heterochromatin (densely packed, dark-staining chromatin) is:In Griffith's experiment (1928) on Streptococcus pneumoniae, which combination killed the mice?
In the Hershey-Chase expWatson and Crick proposed which mode of DNA replication?In E. coli (~4.6 × 10⁶ bp), DNA replication is completed in approximately 18 minutes, giving an average rate oThe enzyme that joins the discontinuous Okazaki fragments on the lagging strand is:Replication does not initiate randomly along a DNA molecule; it starts at:The central dogma of molecular biology (Francis Crick) states:A transcription unit in DNA has three parts:In bacteria (e.g., E. coli), how many types of DNA-dependent RNA polymerases catalyse all RNA synthesis?In eukaryotes, RNA polymerase II transcribes:Of the 64 possible codons in the genetic code:The genetic code is described as 'degenerate' because:The genetic code was deciphered largely through the work of:tRNA is also called the 'adapter molecule' because it:The site of protein synthesis (translation) is the:The bond formed between two amino acids during translation is a:During translation, the activation of an amino acid and its linkage to its cognate tRNA is called:The lac operon (Jacob & Monod) consists of which structural genes?The lac operon is regulated by the lac repressor binding to the:In the absence of lactose, the lac operon is:According to HGP findings, what percentage of the human genome codes for proteins?Which of the following is NOT a step in classical DNA fingerprinting?Which of the following best supports the 'RNA world' hypothesis?In eukaryotes, exons are:Approximately how many genes does the human genome contain (per HGP)?