Compound heterozygote
The presence of two different mutant alleles at a particular gene locus, one on each chromosome of a pair.
The human genome contains two copies of each gene, a paternal and a maternal allele.
A mutation affecting only one allele is called heterozygous.
A homozygous mutation is the presence of the identical mutation on both alleles of a specific gene.
However, when both alleles of a gene harbor mutations, but the mutations are different, these mutations are called compound heterozygous.
Also called a genetic compound.