Question:
Given below are two statements on the aspect of genetic erosion:
Statement (I): It lowers the genetic fitness in a declining population due to a shrinking gene pool.
Statement (II): It is the process in which a plant species faces a gradual or complete loss of its unique gene.
Given below are two statements on the aspect of genetic erosion:
Statement (I): It lowers the genetic fitness in a declining population due to a shrinking gene pool.
Statement (II): It is the process in which a plant species faces a gradual or complete loss of its unique gene.
Statement (I): It lowers the genetic fitness in a declining population due to a shrinking gene pool.
Statement (II): It is the process in which a plant species faces a gradual or complete loss of its unique gene.
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Genetic erosion in forest trees is a major concern in conservation biology, highlighting the need for ex-situ and in-situ gene conservation strategies.
Updated On: Jul 10, 2026
- Both Statement I and Statement II are true.
- Statement I is true but Statement II is false.
- Statement I is false but Statement II is true.
- Statement I and Statement II are false.
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The Correct Option is A
Solution and Explanation
Step 1: Understanding the Concept:
Genetic erosion is the progressive loss of genetic diversity within a species or population, often accelerated by habitat fragmentation, over-exploitation, and monocultures.
Step 2: Detailed Explanation:
- Statement (I) is true: As a population shrinks, genetic drift and inbreeding increase, resulting in a smaller gene pool. This genetic erosion reduces evolutionary adaptability and lowers overall reproductive fitness.
- Statement (II) is true: Genetic erosion is defined as the process where a species experiences a gradual or complete loss of unique genes, alleles, or gene complexes from its gene pool, which can lead to extinction.
Step 3: Final Answer:
Both Statement I and Statement II are correct.
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