Dibrugarh University Question Paper - Zoology – Science - (Nov'2019)

2019 (November)

ZOOLOGY

(General)

Course: 501

(Genetics and Molecular Biology)

Full Marks: 48

Pass Marks: 19/14

Time: 2 hours

The figures in the margin indicate full marks for the questions

1. (a) Fill in the blanks:                                                   1x5=5

1)         Sudden change in the DNA or gene is called as _________.

2)         The method of sex determination in human is known as _________ method.

3)         The chemical bond between two nitrogenous bases in DNA is known as _________ bond.

4)         The RNA found in the ribosome is known as _________ RNA.

5)         ABO blood grouping is an example of _________.

(b) Write short notes on (any three):                                  4x3=12

1)         Sex chromosome.

2)         Restriction enzymes.

3)         Genetic code.

4)         DNA.

2. What is heredity? Explain Mendel’s Law of segregation with an example.                         2+6=8

3. Define mutation. Describe the different kinds of mutations.                   2+6=8

4. Explain how Griffith experimentally proved that DNA is the genetic material.                                 8

5. Define central dogma. Explain the mechanism of RNA transcription.                                   1+6=7

Or

What is genetic engineering? Explain the principle and advantages of gene cloning.     7

 

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