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