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In the context of biological systems, variation Environmental variation Characteristics of all species can be afected by environmental factors such as climate, diet, accidents, culture and lifestyle In this instance, ‘environmental’ simply means ‘outside of A number of factors, including the population’s genetic structure and the environment (Figure 1) influence population variation, the distribution of Variation in Genetics Explained: Types, Causes & Importance | Biology Notes Understand variation in genetics with simple explanations, types, In biology, polymorphism[1] is the occurrence of two or more clearly different morphs or forms, also referred to as alternative phenotypes, in the population of a What are the two types of variation? Continuous variation This is a gradual change in a characteristic across a population, it could be human height, Organisms of the same species vary in many ways. T. 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