Epigenetics: epi what?

Pity the poor editor on BBC’s news programme  “Breakfast” (11 jan 2011) subtitling, as Professor Robert Winston and others discussed the possibility of gender selection to "complete your family in the way you desire" i.e. to finally achieve that longed for girl or boy.

Throughout the discussion the text editor had kept up admirably, coping with explanations of these gender selection techniques:

  • at fertilisation (by enriching for male sperm)
  • pre-implantation (by removing a cell from a fertilised embryo to check the sex.

 (Both techniques are tried and tested. Sperm enrichment is used for cattle breeding and pre-implantation tests are used to select healthy embryos without a gender-linked genetic defect)

 In vivo fertilisation was rendered accurately too, which just shows how much the public has come to know and understand about IVF since it was first introduced all those years ago.

Then Professor Winston mentioned in passing “epigenetic influences” which was transcribed rapidly onto my TV screen as “EDGE THE GENETIC”!

Clearly the editor hadn’t a clue. So I’ve decided to define (& explain) for you the term “epigenetic” so that you will.  Along the way, I hope, you emerge fascinated…

 

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