No, girls do not have an extra bone compared to boys.
Humans, regardless of sex, are generally born with around 300 bones. However, many of these bones fuse together during growth and development. By adulthood, both males and females typically have 206 bones. The number of bones can vary slightly from person to person due to individual anatomical differences, but this variation is not based on sex. Both men and women have the same number of ribs. The misconception that men have fewer ribs originated from the biblical story of Adam and Eve.
