An organism that is heterozygous for two traits is called a dihybrid.

Here's a breakdown:

* Heterozygous: Means having two different alleles for a particular gene.

* Dihybrid: Means having two different traits that are being considered.

Example:

Let's say we have a plant with the following genotype:

* YyRr

* Yy: Heterozygous for the gene controlling flower color (Y = yellow, y = green)

* Rr: Heterozygous for the gene controlling seed shape (R = round, r = wrinkled)

This plant is a dihybrid because it's heterozygous for both flower color and seed shape.