The alternative forms or genetic information for a trait are called alleles.

Here's a breakdown:

* Gene: A segment of DNA that codes for a specific trait (e.g., eye color).

* Allele: A specific version of a gene. For example, there are alleles for blue eyes, brown eyes, and green eyes.

* Trait: The observable characteristic resulting from the interaction of genes and the environment (e.g., the actual color of a person's eyes).

So, each individual inherits two alleles for each trait, one from each parent. The combination of these alleles determines the trait expressed.