An organism that receives different alleles for a trait from each parent is called a heterozygote.

Here's a breakdown:

* Alleles: Different versions of a gene.

* Heterozygote: An individual with two different alleles for a particular trait.

* Homozygote: An individual with two identical alleles for a particular trait.

For example, let's say the gene for eye color has two alleles: "B" for brown eyes and "b" for blue eyes. A person with one "B" allele and one "b" allele (Bb) is a heterozygote. This person would likely have brown eyes, as brown is usually dominant to blue.

Let me know if you'd like more examples!