Genetic markers are DNA sequences with known physical locations on chromosomes. They are points of variation that can be used to identify individuals or species, or may be used to associate an ...

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Try this quiz based on GCSE Geography past papers. Choose the topic you would like to revise and answer the questions. By working your way through the questions created by experts, you can prepare for ...

Genetic variation describes the genotypic and phenotypic differences between individuals in a population, and between populations. This variation arises through genetic mutation and is important as it ...

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Yes, celiac disease is a hereditary genetic condition. People with a first-degree relative, such as a parent, child, or sibling, have a 10% higher risk of developing celiac disease, according to the ...