first-degree relative

same key signature but not the same first degree with another scale is called relative. Thus, e.g. the relative of C major is A minor (no sharps or flats

for Disease Control. [2023-12-25]. （原始内容存档于2019-01-02）.  First, Second and Third Degree Relative. Blue Cross Blue Shield. [2023-12-25]. （原始内容存档于2018-10-20）

同父異母的兄弟姐妹的子女、父母的同父異母的兄弟姐妹等親屬。一个人的三级亲属的大约12.5%的基因與自己相同。 First, Second and Third Degree Relative. bcbst.com. Blue Cross Blue Shield of Tennessee. [18 August

惧症的人更容易有這類的情形。研究表示一等親（英语：immediate family）之間允許的身體親密會比二等親（英语：second-degree relative）要多，不過仍有可能會受雙方性別的影響。一般社會規範會對於接近他人性感帶的身體接近有較多的規範。有些司法管辖区會直接將性感帶定義為性器

{\displaystyle q_{i}} is specified below. The first fraction represents relative accuracy, the second fraction relative simplicity, and λ {\displaystyle \lambda