some form of isolating event must first happen to split one population in two that do not contact each other again until they will not or cannot interbreed anymore.
Cross-breeding occurs within the species.
The theory you are referring to is called allopatric speciation. It suggests that new species can evolve when a population becomes geographically isolated, leading to genetic divergence and eventually the formation of distinct species.
By the theory of evolution, new species form through the process of natural selection. This process most often starts with a random mutation in the genome (a random gene suddenly changes or becomes a "mutation"). This mutation either helps, or hinders the new animal (or mutant if you will hehe). If it helps them survive better than the older species, then this new mutant species will become more abundant. If not, than the new species will die off. This process does not happen all at once though, it usually takes a generous amount of mutations and thousands of years for this to happen.
A new species forms through a process called speciation, where a population becomes reproductively isolated from other populations and evolves distinct traits over time. This isolation can occur through geographic, ecological, behavioral, or genetic mechanisms, leading to genetic divergence and eventually the emergence of a new species.
All cells in a cat (or any mammal, for that matter) are diploid, the only exception being the haploid sperm and ova, which then join to form new diploid kittens.
The word is evolution. It is the process whereby new types of creatures develop over time and others disappear.
Speciation
queen latifa species and michael jackson species<3
Cross-breeding occurs within the species.
New states are required to have a republican form of government.
they evolve to fill new niches
The general term for the process by which new species form is "speciation." Speciation occurs when populations of a species become isolated and diverge through various mechanisms, leading to genetic and phenotypic differences that eventually result in the formation of distinct species.
Geographic isolation is a way in which a new species can form. Isolation over a long enough period of time can result in a species evolving to have different traits.
According to the biological species concept, when the new species no longer can interbreed with the ancestral species, or with the population that it has been geographically isolated from long enough to have allele change significantly enough to prevent interbreeding.
the genes form together
New species that form right after a mass extinction
a new species might form when a group of individuals remains sparated from the rest of its species long enough to accumulate different traits