Most traits involve several genes. However, genetic engineers can often alter expression of a key gene and produce a dramatic change in phenotype.

How do they know which gene to alter? They begin by studying how the protein encoded by the gene leads to phenotype.

What you'll learn in this topic

• Which genes are involved in a phenotype of canola plants
• How overexpressing the vitamin E of one of these genes could potentially alter phenotype

Your task is to work with your mentor, Holly, to determine which gene could increase levels of vitamin E in canola plants.