In fundamental genetics, which statement best describes the difference between a gene and an allele?

• A. A gene is a DNA sequence that influences a trait, whereas an allele is an alternative version of that gene.
• B. A gene is a trait that an organism shows, whereas an allele is the DNA sequence that produces the trait.
• C. A gene is always dominant, whereas an allele is always recessive.
• D. A gene is a chromosome, whereas an allele is a locus on that chromosome.

Answer: (A)