Reproduction The formation of new living entities, which closely resemble to the parent species. The processes are very complex including production of sperms and ova,sexual intercourse,fertilization,pregnancy, development of fetus and lactationReproduction The formation of new living entities, which closely resemble to the parent species. The processes are very complex including production of sperms and ova, sexual intercourse, fertilization, pregnancy, development of fetus and lactation