Question

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What is the best definition of an allele?

A: the number of chromosomes present in an organism’s cells

B: the type of molecule that forms chromosomes and genes

C: an alternative version of a gene

D: the physical appearance of an organism has as a result of a specific gene

Answer 1

An allele (UK: /ˈæliːl/, /əˈliːl/; US: /əˈliːl/; modern formation from is one of two, or more, forms of a given gene variant.