Definition 1

You quickly check your notebook to verify a definition of genetics, hoping for clarity. The initial source reads, “Genetics is the study of how genes and traits are passed from one generation to the next.” As you read, you realize your explanation was missing several crucial aspects, such as the roles that interactions between genes and the environment can play in determining how traits manifest.

Dr. Foster: ‘I see you’ve found a general definition, but how might we refine it for our current fruit fly crossing experiment?’

You: ‘I think we should include the idea that genes don’t act in isolation. Traits can result from multiple factors, including environmental influences.’

Dr. Foster: ‘Exactly. We’ll be examining that interplay once we breed the red-eyed and white-eyed flies in separate vials. So, let’s refine our working definition to address gene-environment interactions—this will help us interpret our data when we score the F1 and F2 generations.’

You nod, then update your notes to ensure your explanation fully covers the genetic and environmental components that influence observable traits in fruit flies. 

Go to: