An organism with a genotype of Hh is considered hybrid because it carries two different alleles for the same gene.

Here's why:

* Alleles: Alleles are alternative forms of a gene. In this case, "H" represents one allele and "h" represents another allele.

* Hybrid: A hybrid organism has two different alleles for a particular trait.

* Homozygous vs. Heterozygous: If an organism has two identical alleles (e.g., HH or hh), it is homozygous. If it has two different alleles (e.g., Hh), it is heterozygous.

In summary: The genotype Hh indicates that the organism has one dominant allele (H) and one recessive allele (h), making it a hybrid for that particular trait.