BSc Biotechnology Sem III 2015 2016 2016 Paper Lll Add Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q3 In Messelaon Stahl experiment, a gol q 4 bind to the single DNA for a preventing The RNA primers are lengthened by to new DNA during 6 The new strand that is made in the direction opposite that of the movement of the replication fork is called the (Laguing, leading, template), is a form of topoisomerase which relaxes the tension produced in head of the replication fork, (Gyrase, Helicase, Amylase) ) Explain the following terms, (any two), (4) ( C) Answer any two of the following. (12) Explain the process of Initiation of DNA replication in Explain Rolling circle mode of DNA replication, Explain the process of primer removing and fragment joining during DNA replication State whether the following statements are trie or false, (arty (2) is the process of removal of an amino group from a base, coli, alkylation damage be repaired by an enzyme called methylguanine which removes methyl group dine either adenine or guanine is removed from the DNA Explain the following terms. (any three). (6) Answer any two of the following. (12) 1 Write in brief about the mutation caused by Base modifying agents such as Nitrous acid and
2. Q2 Write in brief about repair mechanism by Photo reactivation and Alkylation damage
3. Q3 Repair by Methyl-Directed Mismatch repair
4. Q4 Write a note on SOS Response Q (A) Explain the terms (any three) (6)
5. Q11 I B) Give symbols used in pedigree fe (any two) of the following of ED, and TT tetrads at four strand chromatid stage for obtained. Compute the and following products were Ob erve the following pedigree and answer the following questions: Which individual is the proband? What is the mode of inheritance? iv What are the characteristics of the condition hypertricosis? The hormone found in males for expressing secondary sexual characteristics? vi What is hemizygosity? ri a note on (any Three) of the following. (15) 2 marks
6. Q1 Mismatch repair by DNA polymerase proofreading Holliday model of recombination 6 Life cycle of Neurospora

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