Epigenetics is a very trippy area of research that is increasingly leading to completely new understanding of how the body works. The human DNA codebase if stretched out horizontally would stretch to 1.8 meters. Yet instead it winds around this material called chromatin and ends up being only tens of microns in width. This and other things which can support, connect with, or modify DNA in various ways are being found to have effects on gene expression, and it is now known that some of these things can be transmitted to a zygote – the first cell of a human formed from the germ cells of the parents (sperm and egg).
A new thesis just put forward maintains that homosexuality occurs when the “epimarks”, as they are called, from an opposite-sex parent get transmitted to an offspring.
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