simple genetic disease "A hereditary disease that is the result of one or more abnormal alleles and may be dominant (a single copy of the abnormal allele is sufficient to give rise to the disease), semi-dominant, or recessive (requiring both copies of the gene to have an abnormal allele)." [DO:wk\,ls] URI: http://www.ebi.ac.uk/cellline#simple_genetic_disease hereditary disease