Genes
noun
いでんし
遺産 (いさん) Inheritance, Heritage
遺伝 (いでん) Heredity
遺伝子 (いでんし) Genes
電気 (でんき) Electricity, Light
電力 (でんりょく) Electric Power, Electricity
電子 (でんし) Electron, Electronic
原子 (げんし) Atom
The identity いでん she し described was purely Gene related since she only used simple adjectives like black, tall, long, etc. to describe physical appearance.