I. Definition/ very short answers: (Answer 10 questions out of 12 questions)
1x10 = 10
- Mentor Pollen
- Law of segregation
- Probability
- Apomixis
- Sex linked character
- Alien addition line
- SSR
- Standard heterosis
- Induced mutations
- Test cross
- Stability
- IPR
II. Short and brief answers: (Answer 10 questions out of 12 questions)
2x10 = 20
- Genetic basis of selection
- Mutation effects on M1 generation
- Applications of Nanotechnology
- Joint scaling test
- Heterosis vs Luxuriance
- Substantiate the statement "Linked genes do not assort independently."
- Evolutionary advantages of autopolyploids
- Cytokinesis
- Substantiate the statement "All the individuals of same genotype may not show same phenotype."
- Explain the following statement: "Among the F2 progeny of a Monohybrid cross, the ratio of genotypes is 1:2:1, but among the progeny that express the dominant phenotype, the ratio of genotypes is 1:2."
- What is the probability of getting at least one six in a single throw of three unbiased dice?
- Suppose you have just discovered a new trait in Drosophila and found that the reciprocal crosses gave different results. How would you determine whether this trait was due to sex-linked inheritance, purely maternal effect, or cytoplasmic inheritance?
III. Write brief notes/ short notes: (Answer 10 questions out of 15 questions)
3x10 = 30
- Applications of back cross method
- Characteristics of ideal markers
- Method of reversion of autopolyploid to diploid
IV. Long answer questions: (Answer 8 questions out of 12 questions)
5x8 = 40
- Discuss about different structural changes in chromosomes and their applications in crop improvement.
- Factors affecting Hardy Weinberg equilibrium
- Proof of chromosomal theory of inheritance
- Describe various types of genetic information that can be obtained from Line x Tester cross analysis.
- Discuss about Single seed descent method.
- Explain theories of Heterosis.
- Achievements of mutation breeding.
- Discuss about DNA-based markers.
- Explain in detail how you would develop double haploid lines through pollen culture technique.
- Discuss about non-Mendelian inheritance.
- Explain the morphology of chromosomes in eukaryotes.
- Explain Johannsen's pure line theory.
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