The City of London is a small portion of the metropolitan region of London, which is located in England, in the United Kingdom. There are also many other cities and towns arou â¦ nd the world that are called London because they were settled by or built by people from England.he City of London is a small portion of the metropolitan region of London, which is located in England, in the United Kingdom. There are also many other cities and towns arou â¦ nd the world that are called London because they were settled by or built by people from England.
allopatric speciation happens when a physical barrier divides two populations of the same species and sympatric speciation happen when no physical barrier divides the member of a population, but methods such as polyploidy (chromosome doubling) do not let the members of the species have fertile offspring, 2 species are formed (the parental normal species and the divergent species polyploids).
Parapatric speciation is the culmination of this unequal gene flow effect, in which genotypic dimorphism between populations results in speciation of the population and redefines the population as two or more sister species.arapatric speciation may be associated with differential landscape-dependent selection. Even if there is a gene flow between two populations, strong differential selection may impede assimilation and different species may eventually develop.