Archives of Nursing and Care

Gene Pool Journal

 A large gene pool indicates extensive genetic diversity, which is related to robust populations which will survive bouts of intense selection. Meanwhile, low genetic diversity (see inbreeding and population bottlenecks) can cause reduced biological fitness and an increased chance of extinction, although as explained by genetic drift new genetic variants, that will cause a rise within the fitness of organisms, are more likely to repair within the population if it's rather small.   When all individuals in a very population are identical with respect to a selected phenotypic trait, the population is claimed to be 'monomorphic'. When the individuals show several variants of a specific trait they're said to be polymorphic. Primary gene pool (GP-1): Members of this gene pool are probably within the same "species" (in conventional biological usage) and might intermate freely. Harlan and de Wet wrote, "Among kinds of this gene pool, crossing is easy; hybrids are generally fertile with good chromosome pairing; gene segregation is approximately normal and gene transfer is usually easy.". They also advised subdividing each crop gene pool in two: Subspecies A: Cultivated races Subspecies B: Spontaneous races (wild or weedy) Secondary gene pool (GP-2): Members of this pool are probably normally classified as different species than the crop species into consideration (the primary gene pool). However, these species are closely related and may cross and produce a minimum of some fertile hybrids. As would be expected by members of various species, there are some reproductive barriers between members of the first and secondary gene pools:

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