61. Assertion (A) Haemophilia never occurs to women.
Reason (R) Gene for haemophilia are found in X-chromosomes.
Reason (R) Gene for haemophilia are found in X-chromosomes.
62. The basic requirements for the life to arise include
63. For a colourblind person, red colour appear as
64. Assertion (A) Human beings have 23 pair of chromosomes, one of which is the sex chromosomes and the remaining are 22 autosomes. The X-linked disease are related to mutation on a sex chromosomes.
Reason (R) Colour blindness results from a mutation in X-chromosome.
Reason (R) Colour blindness results from a mutation in X-chromosome.
65. The X-chromosome or the X-body was first observed by
66. Which of the following enzymes does not need a template for DNA polymerization but insists on a primer?
67. In autopolyploids, there is
68. Theory of origin of life as a result of chemical evolution has been properly explained by
69. The concept of 'survival of the fittest' was first advocated by
70. Match List-I (Evolutionists) with List-II (Achievements) and select the correct answer:
List-I
List-II
a. Haeckel
1. Emphasized the effects of different environments on isolated forms
b. Wagner
2. Suggested that an inner directive guides the course of evolution mainly independent of the environment
c. Guli
3. Pointed out the inevitability of divergence even without difference in environment
d. Karl Nageli
4. Constructed phylogeny of vertebrates on their embryological development
List-I | List-II |
a. Haeckel | 1. Emphasized the effects of different environments on isolated forms |
b. Wagner | 2. Suggested that an inner directive guides the course of evolution mainly independent of the environment |
c. Guli | 3. Pointed out the inevitability of divergence even without difference in environment |
d. Karl Nageli | 4. Constructed phylogeny of vertebrates on their embryological development |
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