MCQs Plant Breeding and Genetics [3] Posted on 2023-05-06Author admin 0 1. Exon skipping is associated with____________ regulatory mutations silent mutations nonsense mutations RNA processing mutations 2. In meiosis, recombination occurs in________________ Prophase II Prophase I Prophase I Prophase II 3. Which nucleic acid contains the sugar ribose? Both RNA None DNA 4. Who won the Nobel Prize in Physiology or Medicine for the discovery of penicillin? Ernst Chain Alexander Fleming Howard Florey Alexander Fleming, Howard Florey and Ernst Chain 5. _____________ is characterized by the presence of an extra chromosome 21 Down syndrome Turner syndrome Fragile X syndrome Klinefelter syndrome 6. __________________is known as the father of genetics James Watson Charles Darwin Gregor Mendel Francis Crick 7. Which of the following is a component of nucleic acids? Monosaccharides Amino acids Nucleotides Fatty acids 8. Maximum duration of long term storage of germplasm can be upto____________________ around 100 years around 1000 years around 200 years around 500 years 9. __________________discovered the structure of DNA Francis Crick and James Watson Charles Darwin Jean-Baptiste Lamarck Gregor Mendel 10. ___________ is a group of similar appearing plants are selected and their seed is composite Pure line selection Composite variety Synthetic variety Mass selection 11. ________ plants can tolerate higher concentration of salts Halophytes Lithophytes Mesophytes Xerophytes 12. In RNA cytosine generally pairs with _______ Guanine Thymine Cytosine Uracil 13. ________ coined the term gene None H. Morgan Johannsen Gregor Mendel 14. Selfing of a plant belonging to open-pollinated group is called__________ Line breeding Synthetic Inbred line Pure line 15. A nonsense mutation involves_____________ the creation of a different amino acid a regulatory sequence the creation of a stop codon an AG splice acceptor site 16. The normal human chromosome diploid number is_____________ 24 48 46 23 17. __________is a rapid speciation following the availability of new environments Species selection Gradualism Punctuated equilibrium Adaptive radiation 18. _____________is an example of monosomy 45,X 47,XXX 69,XYY 46,XX 19. Large triplet repeat expansions can be detected by ___________technique Western blotting Polymerase chain reaction Southern blotting All 20. _____________ won the Nobel Prize in Physiology or Medicine for the discovery of prions Stanley Prusiner Ernst Chain Frederick Sanger Kary Mullis Loading … Question 1 of 20
