Final answer:
Heterozygous organisms in biology carry two different alleles for a specific gene.
Step-by-step explanation:
In biology, when an organism has two different alleles for a specific gene, it is called heterozygous. This means that it carries both the dominant and recessive allele for that gene. Heterozygous organisms will have different genotypes but the same phenotype as homozygous dominant organisms. The recessive allele will only be observed in homozygous recessive individuals.