👉 In biology, a haplobiont is an organism that has two copies of a single gene. This means that each haplochromatic copy carries one of two alleles (a and a), and the other copy carries the same allele as itself. The haplochromatic copies are located on separate chromosomes, making it possible for these organisms to have inherited multiple copies of a single gene in their genome. Haplobiontism is an evolutionary phenomenon that has been observed in many organisms,