monohybrid

noun a hybrid produced by crossing parents that are homozygous except for a single gene locus that has two alleles (as in Mendel`s experiments with garden peas)
Found on https://www.encyclo.co.uk/local/20974

Monohybrid

A cat (organism) that is heterozygous at one loci (one trait).
Found on http://www.cat-world.com.au/glossary
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