BSc Biotechnology Sem II ATKT BIOTECH LIFE SCIENCE II Question Paper - Mumbai University | munotes

Questions asked in this paper

• 1, Attempt all questions

1. Q2 All questions carry equal marks 4, For Q 2, Q3 and Q 4 attempt A and B OR C and D
2. Q1 Do as directed. (Any IS Crosses between true-breeding strains of peas that had alternative forms of a single trait is a cross When one allele of a gene is not completely dominant to another allele of the gene, it is said to be dominance 3 The ratio of duplicate dominant epistasis is
3. Q4 State true or false: A single diploid individual can have only a two of the multiple alleles Explain the term Punnett square
4. Q6 Define genotype State whether true or false. Two different phenotypic expressions of same trait can be exhibited by an individual
5. Q8 State whether true or false. Polymorphic locus is one of the parameter to measure genetic the protein level
6. Q9 catalyses the excision and insertion events conducted by transposons
7. Q10 Area of lysis on a bacterial lawn culture produced by a phase is known as The transfer of. naked DNA from one cell to another is referred as 12; Strains that are unable to synthesize essential nutrients called
8. Q13 The phenomenon of the insertion of a phage chromosome into a bacterial chromosome is called
9. Q14 IS elements were first identified in microorganism
10. Q15 Conjugation was discovered in 1946 by
11. Q16 deals with molecular nature of heredity where genetic information is encoded within the DNA The genetic constitution of an individual organism is known as
12. Q18 is a mating between genotypes in proportion to the genotypic frequencies in the population > Define - Allelic frequency
13. Q20 Define - Mendelian population
14. Q2 A_ Generate a Punnett square for a pea plant heterozygous for yellow and round seeds crossed with a pea plant homozygous yellow and round seeds Comment on the phenotypic and genotypic ratios of the same (NOTE: The seed colour yellow is dominant over green and the the seed shape round is dominant over green) Explain with a suitable example how mutation in an essential gene can leadto 07 8 marks
15. Q2 C_ Elaborate on the inheritance of multiple alleles with a suitable example. 8 marks
16. Q2 D__ Discuss on the effect of environment on the phenotypic expression of human Whatare transposable elements? Give the mechanism of transposition in IS 08 Describe the events that take place during conjugation of an Hfr 07 7 marks
17. Q3 D_ Give an account of Transformation in bacteria Describe Hardy- Weinberg law along with its assumptions. 08 What is genotype frequency? Explain with suitable example. 07 7 marks
18. Q4 C_ Explain how genetic variation can be measured at DNA level. Describe natural selection with an example. 07 8 marks
19. Q5 Write short notes on: (Any three) d Different forms of genetic drift 15 marks

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