The Case of the 7-Month-Old Identical Twin Boy Whose Sex

Multiple Choice

The case of the 7-month-old identical twin boy whose sex was accidentally altered by a physician demonstrates that _________.

A) family upbringing influences gender behaviour
B) only individual personality influences gender behaviour
C) gender is entirely based on nature
D) no definite conclusions can be drawn from cases such as this
E) gender is entirely based on nurture