What is the difference between gene and an allele

A gene is a stretch of DNA or RNA that determines a certain trait. Genes mutate and can take two or more alternative forms; an allele is one of these forms of a gene. For example, the gene for eye color has several variations (alleles) such as an allele for blue eye color or an allele for brown eyes.

Explanation:

materials water oxygen those are the things i can think of in this moment.

the answer would be knowledge about cars!