Personally, I am particularly interested in genes that do something with us during embryonic development. And hardly any genes make anything more crucial than SRY during our embryonic development. The acronym stands for Sex determining Region on Y-chromosomes and in fact, the name says almost everything.

Well, actually there are two BRCA (pronounced "Brakka") genes: BRCA1 and BRCA2. Few genes have caused so many headlines in recent years as they did. The BRCA genes are so hotly debated as an American biotech company was holding an extremely lucrative patent on these two genes. What that means I would like to explain later; but first, why are BRCA1 and 2 so important?