An allele is a variant of a gene. Each cell has two alleles (one per parent) for each gene: one dominant, one recessive. ... Locus is to some extent interchangeable with gene, though locus is less specific and doesn't imply that the location codes for an entire gene
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She takes medication that increases the level of <u>dopamine in the brain.</u>
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The human body uses 21 amino acids to make the proteins it needs to function.
