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
• B. 2 only
• C. Both 1 and 2
• D. None of these

Answer 1

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.