👉 In biology, monovalency refers to a situation where two individuals have exactly one type of gene (either heterozygous or homozygous dominant). This means that they are identical in every aspect except for their genotype. Monovalent traits occur when an individual has only one copy of the same gene and is therefore not able to produce offspring with the same genetic makeup. Monovalency can be inherited from a parent who carries a recessive allele (a single gene with two copies)
