<€ Inbreeding €>

Inbreeding refers to the mating of individuals or organisms that are closely related through common ancestry, as opposed to outbreeding, which is the mating of unrelated organisms. Inbreeding is useful in the retention of desirable characteristics or the elimination of undesirable ones, but it often results in decreased vigor, size, and fertility of the offspring due to the combined effect of harmful genes that were recessive in both parents.0 Inbreeding goes against the biological aim of mating, which is the shuffling of DNA.

Human DNA is bundled into 23 pairs of chromosomes, within each chromosome there are hundreds of thousands of genes and each gene has two copies known as alleles.