These are important MCQ below which are continuously repeated in Exams
1. Folded fiber model of chromosome organisation was proposed by?
A) FlemmingB) Kornberg
C) DuPraw
D) Balbiani
Answer: C) DuPraw
2. The point mutation occurs due to?
A) Insertion of basesB) Destruction of bases
C) Alterations of sequences of bases in DNA
D) Shifting of a portion of DNA
Answer: C) Alterations of sequences of bases in DNA
3. The process in which seeds are formed but embryo develops without fertilization is?
A) ApomixisB) Parthenogenesis
C) Parthenocarpy
D) None of the above
Answer: A) Apomixis
4. Pureline selection is mainly done for?
A) Clonally propagated cropsB) Cross-pollinated crops
C) Self-pollinated crops
D) Vegetative propagated crops
Answer: C) Self-pollinated crops
5. Find out the correct match:
A) Batson — GeneticsB) Morgan — Mutation
C) Johannesen — Pureline theory
D) All of the above
Answer: D) All of the above
6. In misogamy the pollen tube enters into the embryo sac through?
A) IntegumentsB) Micropyle
C) Chalaza
D) None of these
Answer: B) Micropyle
7. The unblended expression of two different alleles for a trait in the phenotype of heterozygous individual is called as?
A) Incomplete dominanceB) Complete dominance
C) Over dominance
D) Co-dominance
Answer: D) Co-dominance
8. The technique used for determining the molecular mass of a substance by dissolving it and measuring the freezing point of the solution is called?
A) CryobiologyB) Cryoinvestigation
C) Cryotherapy
D) Cryoscopy
Answer: D) Cryoscopy
9. Cryopreservation cannot be done for microorganisms which are?
A) Frost sensitiveB) Anaerobic
C) Frost resistant
D) Aerobic
Answer: D) Aerobic
10. Which of the following is called Sewall Wright effect?
A) Genetic driftB) Isolation
C) Gene flow
D) Mutation
Answer: A) Genetic drift
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