Which feature is more likely to occur in a female fetus rather than a male fetus?

Congenital hip dislocation, also known as developmental dysplasia of the hip, is more commonly observed in female fetuses than in male fetuses. This condition manifests as a misalignment of the hip joint that can occur during fetal development and is influenced by genetic, hormonal, and anatomical factors. Estrogen, which is produced at higher levels in females, may contribute to the increased risk of hip dislocation since it affects ligamentous laxity.

In contrast, pyloric stenosis and Hirschsprung disease are conditions that show a greater incidence in male populations. Pyelectasis is a condition that can affect both genders and does not have a significant sex-based prevalence difference. Recognizing the sex-based prevalence of these conditions is crucial in genetic counseling and when assessing risk factors during prenatal care.