THE “MENACE” OF IDENTICAL TWINS In the olden days and particularly in certain parts of Africa (Nigeria inclusive), twins (multiple-birth babies) were considered an ‘anomaly’ or ‘aberration’ and were either killed or, together with their mother, banished from the society. Nigerians, in particular, would easily recall the heroic feats of the British missionary, Mary Slessor, in fighting for the abolition of the killing of twins in the country. A twin-birth (or any multiple-birth for that matter) occurs in either of two ways: either by reason of the mother’s ovaries having produced two eggs (called ova – ‘ovum’ for singular) in the same menstrual cycle and which two eggs had become fertilized by two male spermatozoa (singular ‘spermatozoon’), thus leading to the production of two embryos (or zygotes) in the same womb, leading to the development of two foeti (singular “foetus”) that eventually become two babies (twins) in that womb. The babies could be both male or both female, or, i...