Evolutionary Processes Microevolution - Biology Assignment Help

Assignment Task

Objectives:

To observe a population in Hardy Weinberg equilibrium and demonstrate how selection pressures can change allele frequencies and lead to microevolution and evaluate how certain aspects in nature can influence evolution, for this lab show all your calculations. These calculations may include in the word document or if clearly and concisely labeled and clear and easy to read may be added as a scanned document (not photo)
 

Evolution is a population phenomenon. Although individuals in a population do not evolve, the population composition changes over time because of several evolutionary factors. The change in gene frequencies in a population resulting from mutations, selection, migrations, and genetic drift is known as microevolution. The mechanism of microevolution is well understood and are in fact used to increase the productivity of crops and livestock. Macroevolutions are the changes that are associated with the origin of a species is less understood.
 

Microevolution

Models of microevolution have been developed since 1858 when Charles Darwin published his version of the theory of evolution. Darwin’s work was monumental in that is established the role of natural selection in evolution. However, Darwin worked 50 years before Mendel’s idea about genetic mechanism became widely known. Darwin was unaware of the basic concepts you know now about genes, inheritance, DNA, and physiology. Researcher in the last 75 years have established the hereditary mechanism and population data that supports Darwin’s theory.
 

A population of organism can be considered as the expression of the gene pool, or the collection of genes in that population. In diploid organisms, the genes in the gene pool occur as pairs in each individual and the individual may be homozygous or heterozygous at a particular locus. Population genetics, the basis of microevolution, deals with the frequency of genes and genotypes in a population and attempts to quantify the influences of mutation, selection and other factors on genes and genotypic frequencies.

Relative frequency aa= (relative frequency a) x (relative frequency a) or (relative frequency a) 2

Relative frequency of A+ relative frequency of a= 1

Relative frequency of A= 1-the relative frequency of a

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