Question

What is the consequence of a change in genetic diversity?
(A) Results in loss of biological diversity
(B) Leads to an increase in the population
(C) Results in loss of human species only
(D) Causes pollution

Answer 1

Hint:
Genetic diversity is the variety of genes in a population or between populations. Loss of genetic diversity can have negative implications for human welfare. For example: if wild populations close to agricultural species are lost, genetic resources are also lost that are used to improve crop qualities such s disease resistance.

Complete step by step answer:
Habitat may be lost due to over-grazing, deforestation, and urban and industrial development. Reduction in habitat results in a reduction in the number of species. As the habitats become fragmented, the populations become smaller and get extinct at a higher rate. Habitat fragmentation also causes an edge effect as the proportion of the habitat decreases and boundaries increase. The edge effect significantly decreases a population’s chances of survival. So change in genetic diversity results in loss of biological diversity as many organisms are unable to survive. If there is a change in genetic diversity then it leads to a change in species diversity that leads to a change in surroundings. And this change leads to the loss of species. The variable traits that make an ecosystem as diversity in DNA mediate characteristics of an organism in that population.

Option ‘A’ is correct

Note:
Intact habitats and ecosystems are more valuable than the products obtained from destroying them. Example: Tropical rainforests provide forest materials. Clearing these forests for agriculture leads to pollution as well as flooding. When cost and benefits are combined, maintaining intact forests has the highest economic value.