In human chemistry, a human reproduction reaction is a specific human chemical reaction type in which reactants male M and female F transform through a chemical reaction to form the product of a baby of new genetic combination. The simplest colloquial expression for this process is often shown as:

This is often paraphrased by the expression "love the chemical reaction". In step-by-step detail, however, the reaction mechanism to this process involves several key energetic steps. [1] In particular, the basic reproduction reaction is better characterized as a double displacement reaction:

in which one male human molecule A parts with the genetic material of his germ cell (sperm) B and female human molecule C parts with the genetic material of her germ cell (egg) D, after which time, following the high energy transition state, two new products are formed, one the chemically-bonded couple:

and a newly formed infant human molecule BD with slowly grows into a fully-formed human E:

Beyond this, the description becomes even more complicated, where focus on the nature of the human chemical bond A≡C comes to the fore.

References
1. (a) Thims, Libb. (2007). Human Chemistry (Volume One) (human reproduction reaction, "mechanism", pgs. 116-19) (preview), (Google books). Morrisville, NC: LuLu.
(b) Thims, Libb. (2007). Human Chemistry (Volume Two), (preview), (Google books). Morrisville, NC: LuLu.