Only a few organisms suddenly survive in a population and form the next generation. Which process becomes more likely?
Answer and explanation
Correct answer: Genetic drift
The governing concept is genetic drift, in which allele frequencies change because of chance rather than because a trait is necessarily advantageous. When a sudden event leaves only a small number of survivors, their genetic composition may not represent the original population. This bottleneck effect can make their traits more common in later generations by chance. Therefore option A is correct; photosynthesis, osmosis, and transpiration are physiological processes, not population-level changes in inherited variation.
Frequently asked questions
What is the correct answer to this question?
Genetic drift
Why is this the correct answer?
The governing concept is genetic drift, in which allele frequencies change because of chance rather than because a trait is necessarily advantageous. When a sudden event leaves only a small number of survivors, their genetic composition may not represent the original population. This bottleneck effect can make their traits more common in later generations by chance. Therefore option A is correct; photosynthesis, osmosis, and transpiration are physiological processes, not population-level changes in inherited variation.
Which subject and chapter does this question cover?
This is a Class 10 Science question. Chapter: World of Living. Topic: Heredity and Evolution.
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