link (http://www.ippmedia.com/ipp/guardian/2007/03/26/87084.html)
In Tanzania the Penal Code makes it an offence to either have carnal knowledge of any person against the order of nature or to permit a male person to have carnal knowledge of him or her against the order of nature.
[...]
The American Court by way of orbiter said the English Court believed, we feel incorrectly, that an anatomical change of genitalia in the case of trans sexual cannot `affect her true sex`.
Thus, the opinion of the Court was to the `effect that in the case of transsexual following surgery and according to expert testimony presented, the dual tests of anatomy and gender are more significant.
On this evidential demonstration, therefore, we are impelled to the conclusion that for marital purposes if the anatomical or genital features of a genuine transsexual are made to conform to the person`s gender, psyche or psychological sex, then identity by sex must be governed by the congruence of these standards.`