1) Sexual reproduction 
sexual reproduction
• (n.) A theory of generation in which each germ is supposed to contain the germs of all subsequent generations; -- the opposite of epigenesis.
(from the article `loess`) ...of a mineral mass without loess properties, perhaps with a high silt and lime content, which under weathering and soil formation acquires loess ...
(sin-jen´ә-sis) the origin of an individual from a germ derived from both parents, as occurs in nearly all higher animals, and not from just one alone. the state of having descended from a common ancestor.
Syn·gen'e·sis noun [ Prefix syn- + genesis .] (Biol.) A theory of generation in which each germ is supposed to contain the germs of all subsequent generations; -- the opposite of epigenesis . 
Type: Term Pronunciation: sin-jen′ĕ-sis Synonyms: sexual reproduction
sexual reproduction.