- What proportion of the offsprings obtained from cross
aaBBcc × aaBbcc will be completely heterozygous for
all the genes segregated independently?
(a) 1/8 (b) 1/4
(c) 1/2 (d) 1/16 - Which of the following is not a vestigial organ in human
beings?
(a) rudimentary ear muscles and third molars
(b) coccygeal tail vertebrae and scalp muscles
(c) Vermiform appendix and nictitating membrane of
the eye
(d) Ear pinna, patella, olecranon process - Which of the following sequences will be produced
as a result of transcription of the DNa sequence
cGaTTacaG?
(a) GcUaaUGUc (b) cGUaaUcUG
(c) GcTaaTGTc (d) GcUaaTcTG - common cold differs from pneumonia in that
(a) pneumonia is a communicable disease whereas the
common cold is a nutritional deficiency disease
(b) pneumonia can be prevented by a live attenuated
bacterial vaccine whereas the common cold has no
effective vaccine
(c) pneumonia is caused by a virus while the common
cold is caused by the bacterium Haemophilus
influenzae
(d) pneumonia pathogen infects alveoli whereas the
common cold affects nose and respiratory passage
but not the lungs. - a normal-visioned man whose father was colour blind,
marries a woman whose father was also colour blind.
They have their first child as a daughter. What are the
chances that this child would be colour blind?
(a) 100% (b) zero percent
(c) 25% (d) 50% - read the following four statements (a-D).
(a) The first transgenic buffalo, rosie produced milk
which was human alpha-lactalbumin enriched.
(B) restriction enzymes are used in isolation of DNa
from other macromolecules.
(c) Downstream processing is one of the steps of rDNa
technology.
(D) Disarmed pathogen vectors are also used in transfer
of rDNa into the host.
Which of the above statements have mistakes?
(a) B and c (b) c and D
(c) a and c (d) a and B- Which one of the following vectors is used to replace
the defective gene in gene therapy?
(a) adenovirus (b) cosmid
(c) ri plasmid (d) Ti plasmid - maximum species diversity is seen in latitudinal range
of
(a) 23.5° N to 66.5° N
(b) 23.5° N to 23.5° S
(c) 23.5° S to 66.5° N
(d) 66.5° N to 90° N. - ‘Floc’ is
(a) a mesh-like structure formed by the association of
bacteria and fungal filaments in sewage treatment
(b) the primary sludge produced in sewage treatment
(c) the effluent in primary treatment tank obtained
during sewage treatment
(d) a type of biofortified food.
Answer Key
- (c) 2. (d) 3. (a) 4. (a) 5. (d)
- (c) 7. (d) 8. (b) 9. (d) 10. (a)
- (d) 12. (d) 13. (c) 14. (d) 15. (c)
- (d) 17. (a) 18. (d) 19. (a) 20. (a)
- (c) 22. (a) 23. (a) 24. (a) 25. (d)
- (d) 27. (a) 28. (b) 29. (d) 30. (c)
- (b) 32. (a) 33. (c) 34. (c) 35. (d)
- (a) 37. (d) 38. (c) 39. (d) 40. (c)
- (c) 42. (d) 43. (d) 44. (b) 45. (c)
- (c) 47. (b) 48. (b) 49. (c) 50. (a)
- (b) 52. (b) 53. (c) 54. (d) 55. (b)
- (d) 57. (b) 58. (d) 59. (c) 60. (d)
- (d) 62. (c) 63. (d) 64. (d) 65. (c)
- (b) 67. (a) 68. (b) 69. (a) 70. (c)
- (c) 72. (a) 73. (a) 74. (d) 75. (a)
- (d) 77. (b) 78. (c) 79. (d) 80. (b)
- (a) 82. (a) 83. (b) 84. (b) 85. (b)
- (c) 87. (c) 88. (b) 89. (a) 90. (c)
- (b) 92. (a) 93. (d) 94. (a) 95. (d)
- (b) 97. (d) 98. (a) 99. (b) 100. (a)
nn