I have it on good authority that they are . although even good authority can be wrong . <| sep |> Thanks fellow humans ! I love y ' ll . # Onelove <| sep |> These are related but separate terms . An allele is a version of a gene . Imagine gene X , which makes protein X . Your version of X might be a little different my version due to say one of my ancestors acquiring a mutation in it , but it ' s still the same gene it ' s located in the same place on the chromosome , 99 . 9 % the DNA bases are the same , it ' s expressed at the same time in the same cells and does the same biological job . The only difference is that one ancestral mutation which we now call a polymorphism , because it ' s a site in the genome that different people can have alternative bases it poly many , morph form . Typically you ' ll see these called single nucleotide polymorphisms or SNPs , pronounced ' snips '. A haplotype is a collection of SNPs or alleles located on the same chromosome that tend to be inherited together and thus can often be found together in multiple people . You might ask but if they are on the same chromosome , shouldn ' t they always be inherited together ? , except for one thing during meiosis the production of egg and sperm cells , recombination occursA 2 AAbtv 402 A , in which sections of the chromosomes inherited from each parent get swapped , to produce two new chromosomes that didn ' t appear in either parent . Sections of DNA that still manage to get inherited despite this process are haplotypes .