MCQOPTIONS
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MCQOPTIONS
This section includes 83 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Nucleic acid occur in |
| A. | Viruses |
| B. | Bacteria |
| C. | Mammal |
| D. | All form life |
| Answer» E. | |
| 52. |
Genetic Identity of human male is known by |
| A. | Nucleolus |
| B. | Cell organelles |
| C. | Autosomes |
| D. | Sex chromosomes |
| Answer» E. | |
| 53. |
Deploid number of chromosome in man is |
| A. | 23 |
| B. | 24 |
| C. | 46 |
| D. | Indefinite number |
| Answer» B. 24 | |
| 54. |
Mendel's law were rediscovered by |
| A. | Correns |
| B. | Tshermak |
| C. | Devaries |
| D. | All of these |
| Answer» E. | |
| 55. |
All offspring of a parents are not similar due to |
| A. | Variation |
| B. | Variation in environment |
| C. | Both a and b |
| D. | None of these |
| Answer» D. None of these | |
| 56. |
Nucleosome contains |
| A. | Only histones |
| B. | Both DNA and histones |
| C. | Only DNA |
| D. | Both DNA and RNA |
| Answer» C. Only DNA | |
| 57. |
Mendel's law of independent assortment is based on F |
| A. | 1 : 2 : 1 |
| B. | 9 : 3 : 3 : 1 |
| C. | 2 : 1 |
| D. | 3 : 1 |
| Answer» C. 2 : 1 | |
| 58. |
Mendal select pea plant for his experiment because |
| A. | They are cheaper |
| B. | These are easily avilable |
| C. | These are of great economic importance |
| D. | They have contrasting fraits |
| Answer» E. | |
| 59. |
An exception to Mendel's principles / Mendel did not include in his discoveries. |
| A. | Dominance |
| B. | Purity of gametes |
| C. | Linkage |
| D. | Independent assortment |
| Answer» D. Independent assortment | |
| 60. |
Who proved that DNA is the basic genetic material ? |
| A. | Griffith |
| B. | Watson |
| C. | Boveri and sutton |
| D. | Hershey and Chase |
| Answer» E. | |
| 61. |
Sex chromosome in human male are named |
| A. | XX |
| B. | XO |
| C. | XY |
| D. | None of these |
| Answer» D. None of these | |
| 62. |
In the context of genetic disorders, consider the following |
| A. | Both children suffer from colour blindness |
| B. | Daughter suffer from colour blindness while son does not suffer from it |
| C. | Both children do not suffer from colour blindness |
| D. | Son suffers from colour blindness while daughter does not suffer from it. |
| Answer» E. | |
| 63. |
In humans, height shows a lot of variation. It is an example of |
| A. | Multiple alloles |
| B. | Pleiotropic inheritance |
| C. | Polygenic Inheritance |
| D. | Pseudoalleles |
| Answer» D. Pseudoalleles | |
| 64. |
A colour blind person cannot distinguish |
| A. | Black and yellow |
| B. | Red and green |
| C. | Yellow and white |
| D. | Green and blue |
| Answer» C. Yellow and white | |
| 65. |
Which one is exception to Mendel's principle of dominance ? |
| A. | Wild pea |
| B. | Mirablius |
| C. | Garden pea |
| D. | Maize |
| Answer» C. Garden pea | |
| 66. |
Which one of the following is wrongly matched |
| A. | Adenine, Thymine-Purines |
| B. | Thymine, Uracil_Pyrimidines |
| C. | Uracil, Cytosine-Pyrimidines |
| D. | Guanine, Adenine-Purines |
| Answer» B. Thymine, Uracil_Pyrimidines | |
| 67. |
B which combination of chromosome a child will be male |
| A. | X from male and X from female |
| B. | X from male and Y from female |
| C. | Y from male and X from female |
| D. | Y from male and Y from female |
| Answer» D. Y from male and Y from female | |
| 68. |
Which one of the following is not a genetic disease in human beings ? |
| A. | Huntington's chorea |
| B. | Phenylketonuria |
| C. | Rheumatic heart disease |
| D. | Tay-Sach's disease |
| Answer» D. Tay-Sach's disease | |
| 69. |
Heamophilia is due to |
| A. | Dominant autosomal genes |
| B. | Recessive atuosomal genes |
| C. | Recessive sex linked genes |
| D. | Dominant sex linked gene |
| Answer» D. Dominant sex linked gene | |
| 70. |
Characters are transferred from parents to progeny through |
| A. | DNA |
| B. | RNA |
| C. | Protein |
| D. | Phospholipids |
| Answer» B. RNA | |
| 71. |
Colour-blindness is related with a defect in |
| A. | Rod cells |
| B. | Cone cells |
| C. | Eye muscles |
| D. | All of these |
| Answer» C. Eye muscles | |
| 72. |
Number of autosomes in human sperm |
| A. | 20 pairs |
| B. | 21 pairs |
| C. | 22 pairs |
| D. | 23 pairs |
| Answer» D. 23 pairs | |
| 73. |
Branch of biology which deal with the study of heredity |
| A. | Cytology |
| B. | Evolution |
| C. | Genetics |
| D. | Phisology |
| Answer» D. Phisology | |
| 74. |
Synthesis of DNA is called |
| A. | Replication |
| B. | Transcription |
| C. | Termination |
| D. | Amination |
| Answer» B. Transcription | |
| 75. |
Nucleoside is |
| A. | Nitrogenous base + Sugar |
| B. | Nitrogenous base + Sugar + Phosphate |
| C. | Sugar + Phosphate |
| D. | Nitrogenous base + Phosphate |
| Answer» B. Nitrogenous base + Sugar + Phosphate | |
| 76. |
Genetic code is a |
| A. | Singlet |
| B. | Doublet |
| C. | Triplet |
| D. | None of these |
| Answer» D. None of these | |
| 77. |
A child is male when |
| A. | Child have XXYY chromosome |
| B. | Child have YY chromosome |
| C. | Child have XY chromosomes |
| D. | Child have XX Chromosomes |
| Answer» D. Child have XX Chromosomes | |
| 78. |
Human beings have |
| A. | 23 pairs of chromosomes |
| B. | 24 pair of chromosomes |
| C. | 25 pairs of chromosomes |
| D. | 26 pairs of chromosomes |
| Answer» B. 24 pair of chromosomes | |
| 79. |
Haemophilia is a genetic disorder which lead to |
| A. | Decrease in haemoglobin level |
| B. | Rheumatic heart disease |
| C. | Decrease in WBC |
| D. | Non-clotting of blood |
| Answer» C. Decrease in WBC | |
| 80. |
The first cloned animal Dolly was a |
| A. | Dog |
| B. | Rabbit |
| C. | Cat |
| D. | Sheep |
| Answer» E. | |
| 81. |
Colour blindness in which all colours are precevid as gray, is termed as |
| A. | Chromasia |
| B. | Dichromasia |
| C. | Monochromasia |
| D. | All of these |
| Answer» D. All of these | |
| 82. |
Who is responsible for the sex determination of a child |
| A. | Father |
| B. | Mother |
| C. | Both mother and father |
| D. | None of these |
| Answer» B. Mother | |
| 83. |
Match List_I with List_II and select the correct answer using the codes given below: |
| A. | A. |
| B. | B. |
| C. | C. |
| D. | D. |
| Answer» C. C. | |