分ぶん子し遺い伝でん学がく

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Meanings

1

noun

molecular genetics

Academic field studying the structure and function of genes at a molecular level.

part, minute of time, segment

子child, sign of the rat, 11PM-1AM

遺bequeath, leave behind, reserve

伝transmit, go along, walk along

学study, learning, science

遺い伝でん学がく
遺伝学 is the broader field of genetics; 分子遺伝学 specifically focuses on the molecular mechanisms.
分ぶん子し生せい物ぶつ学がく
分子生物学 is molecular biology, which overlaps with molecular genetics but also includes other molecular processes in cells.

Compound of 分子 (molecule) + 遺伝学 (genetics).