Question

Why does genetic diversity have a major role in the adaptability and survival of a species?
(A) Any population should remain the same regardless of the outer change in the environment
(B) Ability of the population to adapt to changing environment
(C) Environment remains unchanged even if the population changes
(D) Population inability to adapt to changing environment

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. Example: If wild populations close to agricultural species are lost, genetic resources are also lost that are used to improve crop qualities such as disease resistance.

Complete step by step answer:
Genetic diversity acts as a way to adapt to changing environments for the population. As the variation increases some individuals that have allelic variation are suited for the environment.
Genetic diversity refers to the variation in the genetic composition of individuals within or among species. Genetic diversity enables the population to adapt to its environment and respond to natural selection. The amount of genetic variation is the basis of speciation. Genetic diversity occurs at several levels of organisation such as among higher taxonomic categories such as kingdoms phyla and families, among species and among populations. Most genetic diversity one can see between organisms of two kingdoms (such as plants versus animals), between phyla (such as arthropods versus chordates), between classes (such as birds versus reptiles) and so on.

Option ‘B’ is correct

Note:
The study of the population about its environment is called population ecology. This includes the influence of the environment on population density, distribution, age structure, and population size. This is called population ecology.