Identify the characteristic that would not help you to determine the sex of a pelvic girdle.

When determining the sex of a pelvic girdle, several characteristics are typically examined, including the shape of the pelvic inlet, the width of the pelvis, and the angle of the subpubic arch. However, one characteristic that would not help you in determining the sex of a pelvic girdle is the presence of muscular markings or features.

1. Male and female pelvic bones can exhibit variations in muscle attachment marks due to physical activity during life rather than inherent skeletal differences related to sex.
2. These markings are influenced by individual biology, lifestyle, and environmental factors, making them unreliable for sex determination.
3. In contrast, traits such as pelvic width and the shape of the pelvic inlet are more consistent and provide clearer indicators of biological sex.

In summary, while certain skeletal features provide valuable clues for sex determination, muscular markings are not a reliable trait for discerning the sex of a pelvic girdle.