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Question

Consider the following statements with respect to biodiversity:

1. A decrease in the size of population of a species can lead to a decrease in genetic diversity.
2. A decrease in genetic diversity is likely to lead to a decrease in genetically inherited diseases.

Select the correct statements using the code given below.

A
1 only
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B
2 only
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C
Both 1 and 2
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D
None of these
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Solution

The correct option is A 1 only
Genetic diversity generally underpins population resilience and persistence. Reductions in population size and absence of gene flow can lead to reductions in genetic diversity, reproductive fitness, and a limited ability to adapt to environmental change increasing the risk of extinction. Even if population is able to increase again, an inbreeding within a smaller variety of genes will occur. Population members may be more likely to inherit genetic diseases.

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