Creationists consider that any observable speciation descends from these distinctly created kinds through inbreeding, deleterious mutations and other genetic mechanisms.
However, it is critical to understand that reduced inbreeding depression in first generation hybrids can, in some circumstances, be strong enough to more than make up for outbreeding depression.
The remaining populations are often geographically isolated from one another, which can lead to inbreeding, and consequently, reduced genetic diversity.