Encyclopaedia Britannica

What’s the Difference Between a Gene and an Allele?

Kara Rogers

PREVIEW

A gene is a unit of hereditary information. Except in some viruses, genes are made up of DNA, a complex molecule that codes genetic information for the transmission of inherited traits. Alleles are also genetic sequences, and they too code for the transmission of traits. So, what it is the difference between a gene and an allele?...

Book Cover for "What’s the Difference Between a Gene and an Allele?"

PREVIEW

A gene is a unit of hereditary information. Except in some viruses, genes are made up of DNA, a complex molecule that codes genetic information for the transmission of inherited traits. Alleles are also genetic sequences, and they too code for the transmission of traits. So, what it is the difference between a gene and an allele?...