Practice question

In ecology and population genetics, population represents group of individuals belonging to single species occupying same geographic area and time interval, capable of interbreeding and sharing gene pool. It is not simply assemblage of different species or random collection; it implies reproductive interaction, common gene exchange, and similar selective pressures. Population size, density, age structure, and gene frequencies change over generations due to evolution. Understanding population concept underlies Hardy-Weinberg law, genetic drift, migration, and conservation genetics, where allele dynamics track within species-specific groupings.