Population is all the organisms of the same group or species who live in a particular geographical area

a particular geographical area and are capable of interbreeding.[1][2] The area of a sexual population is the area where inter-breeding is possible between any pair within the area and more probable than cross-breeding with individuals from other areas”

organism sharing a unique collection
Of structural and functional charcterstic

in a particular location. Population size represents the total number of individuals in a habitat. Population density refers to how many individuals reside in a particular area.

laws, new mutations, natural and artificial selection and a number of other phenomena are characterized by exceptional complexity of the reproductive conditions of entire populations.

organism from humans to beetles to plants to bacteria share a common ancestor. Millions of years of evolutionary pressure caused some organisms to died while others survived, leaving earth with the diverse life forms we have today. Within this diversity is unity; for example, all organisms are composed of cells and use DNA. The theory of evolution gives us a unifying theory to explain the similarities and differences within life’s organisms and processes.

several generations and relies on the process of natural selection. The theory of evolution is based on the idea that all species? are related and gradually change over time.

unifying theory to explain the similarities and differences within life’s organisms and processes.
Populations (or gene pools ) evolve as gene frequencies change; individual organisms cannot evolve.
Variation in populations is determined by the genes present in the population’s gene pool, which may be directly altered by mutation.
Natural selection is the gradual process that increases the frequency of advantageous inherited traits (allowing it to survive and reproduce) and decreases the frequency of detrimental inherited traits within a population.
A population’s genetic makeup can also be affected by random chance events like genetic drift, or when genes are inherited together in genetic hitchhiking.

equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation in the absence of other evolutionary influences.

HARDY-WEINBERG PRINCIPLE

larger or smaller populations? The relationship between effective population
size (Ne) and the rate of evolution has consequences for
our ability to understand and interpret genomic variation, and is central to many aspects of evolution and
ecology. Many factors affect the relationship between Ne
and the rate of evolution, and recent theoretical and
empirical studies have shown some surprising and
sometimes counterintuitive results. Some mechanisms
tend to make the relationship positive, others negative,
and they can act simultaneously. The relationship also
depends on whether one is interested in the rate of
neutral, adaptive, or deleterious evolution. Here, we
synthesize theoretical and empirical approaches to understand ding the relationship and highlight areas that
remain poorly understood.
Does population size limit evolution?
Do small populations evolve faster or slower than large
populations? When and why does population size limit
adaptation? Answering these questions is important for
understanding present-day diversity and the evolutionary
past and future of life on Earth [

role in evolution. ... Isolation means that organisms of the same species are separated, and happens when there is something between the organisms that they can't cross. Organisms become isolated as a result of environmental change.

isolation in evolution

allele flow) is the transfer of genetic variation from one population to another. If the rate of gene flow is high enough, then two populations are considered to have equivalent allele frequencies and therefore effectively be a single population.

Gene flow in evolution