B.Sc. (Biotechnology) Sem II 2021 2022 May 2022 BT LIFE SCIENCE II GENETICS Question Paper - Mumbai University | munotes

Questions asked in this paper

1. Q1 All questions are compulsory
2. Q3 Use of log tables and non-programmable calculator is allowed
3. Q4 ForQ2,Q3 and Q A and B OR C and D
4. Q1 Select the appropriate option for the following questions. 40 marks
5. Q1 The alternate form ofageneis
6. Q2 is used to determine the inheritance of traits in humans due to inability of & Which of the following statements is true regarding the “law of segregation’?
   • a. Law of segregation is the law of purity of genes
   • b. Alleles separate from each other during gametogenesis
   • c. Segregation of factors is due to the segregation of chromosomes during
   • d. All of the above
7. Q4 When the activity of one gene is suppressed by the activity of a non-allelic gene, it is known as How many phenotypes can occur in the human blood group ABO with alleles IB
8. Q6 The geometrical arrangement that helps to find out all the possible combinations of male and female gametes is known as The phenotypic ratio of dominant epistatic interaction is . (9:3:4, 12:3:1, 15:1,
9. Q8 The enzyme that catalyzes the transposition of an IS element is
10. Q9 can carry out natural transformation
11. Q10 phage can bring about specialised transduction. (P1, A, M13, MS2) When conjugation is used for mapping of genes the map unit is = 12. If a bacterium is able to synthesize histidine and Lysine but not able to metabolize lactose then the genotype will be represented as
12. Q13 Griffiths experiment the capsulated and pathogenic strain was denoted as
13. Q14 The group of interbreeding organisms in a population is known as
14. Q15 If 65% of the population has brown eyes, then what is the frequency of people in the population who do not have brown eyes? (65,0.65,35,0.35)
15. Q16 The sum of genotype frequencies equals to
16. Q17 Which of the following statements is incorrect in case of Hardy-Weinberg law?
    • a. This law describes the genetic imbalance within a population
    • b. The population should be randomly mating
    • c. The law shows how Mendelian principle of segregation influences allelic frequency of the population
    • d. The population should be free from mutation
17. Q19 traits evolve to make the Organisms more
18. Q20 Which of the following is a type of genetic drift?
19. Q2 A Some dogs bark when trailing, others are silent. The barking trait is dominant gene. Standing are dominant to drooping 7 marks
    • a. Show the Cross between a homozygous Standing-eareq barker, and a
    • b. Obtain the Phenotype ratio using the ratio method of the F2 generation when the F4 Progenies were Selfed. (illustrate your answer with
20. Q2 B Write a note on Multiple Alleles 4 marks
21. Q2 C Wolves are sometimes Observed to have black Coats and blue eyes. Assume further that normal coat color (N) is dominant to black and brown eyes (B) are dominant to blue (b). Suppose the alpha Male and alpha female Of pack (these are the dominant individuals who do most of the breeding) are black with blue and normal Colored with brown eyes, respectively 7 marks
    • a. What would be the Offsprings of the above cross?
    • b. After Selfing the F4 Progeny, Using ratio method write the expected Phenotypic ratios of the Offspring. (illustrate your answer with Suitable
22. Q2 D Write 4 note on Monohypbrid cross 4 marks
23. Q3 A Describe the Process of Conjugation in detail. Explain the replica plate technique 04 7 marks
24. Q3 C Describe the Process of transduction in detail. 7 marks
25. Q3 D Write a note on Composite and Non-composite Transposons. 4 marks
26. Q4 A Calculate the genotypic and allelic frequencies for a data received from genetic variation in milkweed beetles for a locus that codes for enzyme Explain in brief about ‘Speciation’. 04 7 marks
27. Q4 C group of scientists found that there are three alleles at a yocus coding for malate dehydrogenase (MDH) in the ‘Water flea’, Daphnia magna living in ponds near Cambridge, England. They were collected from ponds and genotypes were determined by electrophoresis. The following are the 7 marks
    • a. Calculate the frequencies of M,S and F allele in the population are in Hardy- Weinberg equilibrium
28. Q4 D_ Explain natural selection with the help of an appropriate example. directed (Any Two) 02 4 marks
    • a. Correct the statement if incorrect: All test crosses are back crosses and all back crosses are test crosses
    • b. Define Transformation
    • c. Define Minimal medium
    • d. Correct and rewrite the following statement: The unit of study of molecular genetics is an individual

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