Important post

Tributes to Althea Hayton

Althea Hayton, founder of Womb Twin, passed away peacefully on August 13 (sorry for the delay in posting this news on the blog). We are all ...

Showing posts with label human genome. Show all posts
Showing posts with label human genome. Show all posts

Friday, April 01, 2011

How identical twins aren' t identical

I interrupt my April study of the medical signs of a twin conception to bring you this, which arrived in my inbox today via the Vanishing Twin forum.
A scientist in Montreal has finally proven what a lot of people have been finding -  that "identical" twins aren't identical.  Read it here, you will be amazed. 


But after sequencing the DNA of twins and their parents, and looking at one million differences between their genes, Singh concluded that twins are not actually identical.  "Our results have really forced everyone to rethink the idea that identical twins are actually identical," he said.


In writing the new book "Womb twin survivors"  I describe the sole survivors of monozygotic (MZ) , dizygotic (DZ) and multiple conceptions. I had to struggle with  difficult terns like MONOZYGOTIC  to  describe identical twins, because they arise out of one zygote and look very similar but I discovered early on they are do NOT have identical genes. This new study seems to prove that very nicely.
Epigentics rule! What happens before birth influences you for the whole of your life, be you MZ or not  - as if womb twin survivors need convincing of that, but science is after all a very slow process of proving the obvious......
So if you are a monozygotic (MZ) wombtwin survivor,  rest assured that your other half was not exactly like you - another version of yourself.   Your MZ twin was so different from you that he or she didn't survive to birth as you did. You are a unique individual, not a clone.
The Montreal study also casts doubt on every piece of twin research ever conducted, which relies on comparing MZ twins with DZ twins, on the assumption that MZ twins share a complete set of genes - wrong.


My new book did not come out a moment too soon!
Mixed reviews so far, but then it's 375 pages, 70 illustrations, 300 references plus appendices.  It's so packed with information it will take a lot of reading before we get a true result, but I thought it would be fun to record the first responses: 
  • "Beautiful and fascinating."
  • "The pages will make a good starter for my wood burner......." 
  • "Can't wait to receive my copy...."