Molecular biology is a field of study that understands life phenomena at the molecular level.

He is an expert in biophysics.

I am majoring in developmental biology at university.

He received the letter challenging him to a duel and began preparing for the duel.

What is this organism?

Gender roles are an important element in defining individual behavior in society.

His role is to fulfill his responsibilities as a leader.

My family consists of five people.

I like to see the works of famous painters.

His name is John.