Genes vs Alleles

Thanks for stopping by, today we’re going to talk about the difference between genes and alleles.

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Let’s start with genes.

Genes are sections of DNA which code for a specific trait.

You have literally thousands of genes. You have genes for eye color, hand size, metabolism, cell structure, and every other piece of your body.

It’s not as simple as one gene for one trait, but most basic biology classes discus it this way for simplicity.

Let’s move on to alleles.

Alleles are different forms of the same gene. Think of it as a different flavor or variety. Let’s use an analogy; if Coke were the gene, the alleles would be diet, classic, caffeine free, vanilla, cherry, or whatever kind of coke it is.

Using the eye color gene, the alleles could be blue, green, brown, grey, hazel, Just the different options for eye color.

Just remember, the gene specifies which trait and the allele specifies what form the gene takes.

And that’s it. Check out my other genetics videos, and if you have any questions, throw them in the comments.