autosomal recessive pattern definition biology
Autosomal recessive. A pattern of inheritance in which both copies of an autosomal gene must be abnormal for a genetic condition or disease to occur. An autosomal gene is a gene that is located on one of the autosomes or non-sex chromosomes.enetics Referring to a mode of inheritance, in which the phenotypic expression of a gene of interest requires its presence on both paired chromosomesâie, a homozygous state; if both parents have the recessive gene of interest, the likelihood of expression in progeny is 1:4; â and â are affected equally.