血筋

1. Origins, structure, and basic meaning

• Structure: 血筋 (ちすじ) combines blood 血 and line 筋 to denote ancestry or a family line.
• Basic usage: It refers to lineage extending through generations and the family background it represents.

2. Common pitfalls and similar expressions

• Lineage does not determine ability
  • 血筋 identifies a genealogical connection; it does not itself claim that talent or character is fixed by ancestry.