91. Some plasmids exist in only a very few copies per cell which are said to be
92. Three of the 64 amino acid codons do not specify any tRNA and hence are called
93. Parasexual means of recombining somatic nuclei is found in
94. Assertion (A) Mendel worked on garden pea (Pisum sativum).
Reason (R) Garden pea belongs to family-Malvaceae.
Reason (R) Garden pea belongs to family-Malvaceae.
95. In which of the following methods of hybridization the recipient parent is crossed to a donor parent?
96. Consider the following statements.
1. Use and disuse of organs.
2. Inheritance of acquired characters.
3. Branching descent
4. Natural selection
5. Mutation
6. Reproductive isolation
The two key concepts of Darwinism from the given options are
1. Use and disuse of organs.
2. Inheritance of acquired characters.
3. Branching descent
4. Natural selection
5. Mutation
6. Reproductive isolation
The two key concepts of Darwinism from the given options are
97. The Oparin-Haldane theory regarding origin of life suggests that
98. Which of the following theories suggests that the plants and animals that have inhabited the earth have been changing through millions of years in the different geological periods of the earth's history?
99. The major functions, which ectomycorrhizae perform, include
100. The unit of heredity in our body is called
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