Which of the following major ideas were proved by Gregor Mendel?
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- A There is a tendency among organisms `to increase rapidly in number if conditions are favourable
- B There is a struggle for existence among a very large number of offspring
- C Nature selects organisms which will survive to produce their kind
- D All species exhibit structural and functional variations
- E Characteristics of an organism are controlled by genes occurring in pairs
Correct Answer: Option E
Explanation:
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