Essay Samples on Natural Selection

Frequency Dependent Selection: Its Characteristics and Results

Selection is frequency-dependent when the fitness of a phenotype, genotype, or gene (or species) varies with its relative abundance in the population (or community) and hence can be detected only when measured at two or more frequencies. In “negative frequency-dependent selection,” fitness decreases with frequency…

Evolution Of The Stress Response

The concept of natural selection was first introduced by Charles Darwin and has had an immense impact in all aspects of biology. The idea is that genes that confer a fitness advantage increase in the population while ones that decrease fitness become less common. Natural…

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