noun
geneticist
A scientist who studies genetics. Neutral, formal term used in academic and professional contexts.
彼女は遺伝学者として、がんの研究をしている。
As a geneticist, she is researching cancer.
遺伝学 is the field of genetics, while 遺伝学者 refers to a person who works in that field.
Compound of 遺伝 (いでん, 'heredity') + 学 (がく, 'study') + 者 (しゃ, 'person'). The term is a straightforward modern academic compound.