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An Investigation In to Human Variation Aim The aim of this investigation was to explore and analyse an aspect of human variation. Hypothesis There will be a positive correlation between an individual's foot length and their hand span. This may be due to linkage; the genes that create these characteristics may be positioned on the same chromosome so that they become linked, and are inherited together. This linkage causes the two characteristics to become associated so that a person with large feet will also have large hands. Variables In order to create a fair investigation, it was necessary to consider the variables that affect an individual's foot length or hand span. Any variables that were likely to disrupt the results were controlled and those measured were recorded accurately so that any correlation could be observed and evaluated successfully. i) Age - The majority of individuals stop growing by the age of eighteen. Below this age, people grow...

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