Sexual reassignment is
{ 1 } - a type of reconstructive surgery by which the sexual phenotype of a male is altered to resemble that of a female, or vice versa.
{ 2 } - The removal of the Y chromosome from the cells of a male or the addition of it to the cells of a female by recombinant DNA.
{ 3 } - a type of reconstructive surgery by which the sexual genotype of a male is altered to that of a female, or vice versa.
{ 4 } - not often used to treat transexualism when psychiatric treatment fails.
{ 5 } - not popularly known as "sex change."
The genotype cannot be changed by surgery.