Alleles, hybrids, genotypes, homozygosity, heterozygosity explained

An allele is one of two, or more, forms of a given gene variant. For example, the ABO blood grouping is controlled by the ABO gene, which has six common alleles. Nearly every living human's phenotype for the ABO gene is some combination of just these six alleles. #Zygosity #genotype #Allele #HybridOrganismClassificationRank #HealthIndustry