1.   In such litters, female infants grow up to become affectionate mothers.

2.   The Mangbettu in Africa wrapped the heads of female infants in pieces of giraffe hide to attain the cone shape considered beautiful.

3.   Thus a black female infant may have a two-week advantage over a white male.

4.   To avoid having too many girls, some women secretly kill their female infants or abort female fetuses.