n. the branch of biology that studies heredity and variation in organisms
n. 遗传学
[化] 遗传学
1. Genetics plays a key role in determining our physical traits.
遗传学在决定我们的身体特征中起着关键作用。
2. Many diseases are linked to genetics and can run in families.
许多疾病与遗传学有关，并且可以在家族中遗传。
3. Scientists study genetics to understand how traits are passed from parents to children.
科学家研究遗传学以了解特征是如何从父母传递给孩子的。