A Canadian mother has frozen her eggs for use by her seven-year-old daughter, who cannot have children naturally.
Should the girl opt to use the eggs and gain regulatory approval, she would effectively have a baby that was her half-brother or sister.
Professor Tan said this was the first case of mother-to-daughter egg donation. There have been cases of donation from sister to sister.
"In psychiatry we are hearing more and more of children suffering from identity problems, and specifically a condition called 'genealogical bewilderment'. Could it possibly get more bewildering than this?"
clipped from: news.bbc.co.uk