The emergence of resistance to antibiotics in bacterial groups is due to:
1. adaptive radiation
2. transduction
3. pre-existing variation in the population
4. mutations  induced by antibiotics
Subtopic:  Concept of Organic Evolution: Evidence |
From NCERT
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A population of a species invades a new area. Which of the following condition will lead to adaptive radiation?

1. Area with a large number of habitats having very low food supply
2. Area with a single type of vacant habitat
3. Area with many types of vacant habitats
4. Area with many habitats occupied by a large number of species
Subtopic:  Theory of Evolution & Lamarckism | Concept of Organic Evolution: Evidence |
From NCERT
NEET - 2019
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NEET 2026 - Target Batch - Vital
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