BSc Botany Sem III ATKT 2017-18 ATKT Botany Paper II Question Paper - Mumbai University | munotes

Questions asked in this paper

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1. Q1 A) Choose the correct option from the following: 10 marks
   • i) which deals with formation and decomposition of hydrogen peroxide is
   • ii) DNAreplication occurs in
   • iii) A nucleoside is composed of
   • d) Sugar + Phosphate
   • iv) Barred eye of Drosophila is an example of chromosomal aberration
   • v) is an example of sex influenced character
   • vi) Domestic fowl, reptiles and some fishes show method of sex determination
   • vii) Chloroplast inheritance in Mirabilis jalapa isan example of inheritance
   • viii) is the process by which the DNA makes an exact and accurate copy of itself
   • ix) enzyme is also known as kornberg’s enzyme /fragment
   • x) The pre-m RNA is modified by the addition of a cap of 7 - methyl guanosine (m 7G) to the terminal 5’ end is called
   • B. — Answer the following in one or two sentences : 10
   • i) What happens during Metaphase
   • ii) Name the Purines and Pyrimidines
   • iii) are inversions with reference to chromosomal aberrations?
   • iv) Write two examples of XX-XY type of sex determination
   • v) What do you mean by replicon
   • Q.P. Code : 19590
2. Q2 Answer any two of the following : 20 marks
   • i) the structure and functions of Mitochondria
   • ii) Describe the structure and functions of t-RNA
   • iii) Describe the stages of prophase I of Meiosis
   • iv) Describe the double helical structure of DNA
3. Q3 Answer any two of the following : 20 marks
   • i) Whatare chromosomal aberrations? Describe Deletion with reference to their cytological and genetic significance
   • ii) Explain the Genic balance theory of sex determination in Drosophila
   • iii) What is sex linked inheritance? Explain it with reference to colour blindness in human
   • iv) What is cytoplasmic inheritance? Explain it with reference to plastid transmission in
4. Q4 Answer any two of the following : 20 marks
   • i) Explain Messelson’s and Stahl’s experiment to prove that DNA replication is
   • ii) Explain the steps involved in DNA replication in prokaryotes
   • iii) Explain the process of transcription in eukaryotes
   • iv) Explain the role of various enzymes in eukaryotic DNA replication
5. Q5 Write Short notes on any four : 20 marks
   • ii) Telophase
   • iii) Translocation
   • iv) ZO-ZZ type of sex determination
   • v) Hypothesis
   • vi) of mRNA

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