One gene has several different forms, resulting in more than two phenotypes.

Understand the Problem

The question is asking which genetic concept describes a situation where one gene has multiple forms leading to more than two phenotypes. The options provided relate to different genetic inheritance patterns.

More Information

Multiple alleles refer to a situation in which a single gene has more than two allelic forms in a population, leading to the expression of multiple phenotypes.

Tips

Be careful not to confuse multiple alleles with polygenic traits, which involve multiple genes.

Sources

• Multiple Alleles | Biology for Majors I - Lumen Learning - courses.lumenlearning.com
• Incomplete dominance, codominance & multiple alleles (article) - khanacademy.org