At what stage in the life history of a mammal is the sex of an individual set? by Sunday | Sep 8 | Biology JAMB | 0 comments A. at adolescence B. at puberty C. at birth D. at conception Correct Answer: Option D – at conception Users Also Read These:The quantity of rice that an individual is able to…The stage in the life history of a moth responsible…INS 313 Theory Questions: Life Assurance vs.…The body temperature of a mammal has to be…The maintenance of a stable internal environment…