Migration And Its Effects On Population

In a large, randomly mating population where mutations, migration, and natural selection are no longer viable, the allele and genotypic frequencies will remain at equilibrium. If any of these conditions are changed, then the allele and genotype frequencies will be unable to maintain genetic equilibrium.

Genetic diversity allows the population to adapt to changing environments and it contributes and adds to the gene pool.

Gene flow: genetic additions and/or subtractions from a population resulting from the movement of gametes

The Great Migration was a massive movement of African Americans from the South to the North from 1863 to 1960. The largest spike in this migration occurred from about 1910 to 1920.

This occurs when a species is separated and mate with a different species, changing their genetic composition, if then the two species were to be brought back together and mate again, it would cause what is called ‘gene migration’. This process gives so many different variations among the species, which allows more and more variation and population. This process also explains endangered species and extinction.

From the data we can conclude that different traits or parameters can effect a population in many different ways. It can decrease or increase a population depending on the trait. After a hurricane hits Lake Malawi the cichlid fish male population must adapt to the new factors that have been put upon them. Mutation within the population supports the fact that it can cause dominant and recessive allele frequency to decrease. Migration causes the allele frequency to lower as well due to movement of the population after the hurricane. The cichlid male fish with a higher fitness are more suitable for their environment, but when their fitness is lowered, their allele frequency decreases. This

The Great Migration brought about a massive redistribution of the African American population throughout the United States. It transformed black ways of life, art, and institutions, as well as the demographics and cultures of many American cities.

Biodiversity is life’s variety. It is the varying genetics that each species carries that makes it different and “unique”. Biodiversity is important, not only in evolution, but in survival; when sometimes those terms can mean the very same thing. Interestingly, biodiversity can mean a variance in the life itself – or within the genetics of a species. In keeping breeding habits within the same lineage, some animals risk lower biodiversity and sometimes even deformities and disease, as they are able to more easily pass on unfavorable hereditary traits. In increasing the overall biodiversity, the only risk is a

A population’s genetic makeup can change through mutations, change in location, an increase in population, and an increase in mating between organisms. Breeding within species ensure the future offsprings of a particular species and creates a variations in alleles than before. The environment is related to the organism existence in a community an example is a white butterfly in a snowy region. Predictors are less likely to see the

Genetic diversity provides a species with its form and function. A species genotype refers to their genetic code; what their cells are going to be used for – hair cell, eye cell, muscle cell, etc. A species phonotype refers to the way in which that species gene will be expressed – blonde hair, blue eyes, large muscle tone; which significantly impacts the success of that individuals genes. Without genetic diversity among populations the gene pools would be very limited, which gives way to a rise in mutations and inevitably the end of a species. “Genes regulate body size, shape,

“If no such variations exist, the population rapidly goes extinct because it cannot adapt to a changing environment” (O’Neil, 1998-2013). Scientists call this reproductive success. “Within a specific environment context, one genotype will be better than another genotype in survival or reproduction for certain reasons having to do with the way its particular features relate to the environment or relate to other organisms within the population” (Futuyma, 2000-2014). The theory of evolution is explicable through various kinds of scientific research.

Population adaptation can occur as a result of local environmental pressures. Please explain what typically occurs to allele frequencies for these adaptive genes during this

There is another side to the biodiversity of the evolutionary field, as the population weakens the species start the inbreeding of smaller populations, thus playing a role in the extinction of a species. Inbreeding is reproduction among members of a species that are genetically similar. The genetic inbreeding is designed to bolster populations of species whose numbers are in decline. However, when only a few species or varieties of a species are cultivated or survive, the genetic diversity of the organism declines, and population is more vulnerable to being wiped out by new diseases or climate changes because of the inbreeding (Alters, 2000).

Generally speaking, there are numerous issues related to genetic diversity which include mutations, sexual reproduction, migration, and population size.

Gene pool is the total number of genes of every individual in an interbreeding population ("Gene pool," 2008). A large gene pool indicates high genetic diversity, increased chances of biological fitness, and survival ("Gene pool," 2008). A small gene pool indicates low genetic diversity, reduced chances of acquiring biological fitness, and increased possibility of extinction ("Gene pool," 2008). Gene pool increases when mutation occurs and survives. Gene pool decreases when the population size is significantly reduced (e.g. famine, genetic disease, etc.) ("Gene pool," 2008). Some of the consequences when gene pool is small are low fertility, and increased probability of acquiring genetic diseases and deformities ("Gene pool," 2008). Gene pool gives an idea of the number of genes, the variety of genes and the type of genes existing in a population ("Gene pool," 2008). It can be used to help determine gene frequencies or the ratio between different types of genes in a population ("Gene pool," 2008).