Vanishing Twin Blog

It is thought cells from a miscarried sibling were absorbed by the man while he was in the womb A US man has failed a paternity test after doctors revealed his dead twin, whose DNA the man absorbed in the womb, is the genetic father of the child.   The 34-year-old man is the first ever reported case of a paternity test being fooled by a human chimera, someone with extra genes absorbed from a twin lost in early pregnancy. https://www.independent.co.uk/news/science/human-chimera-man-fails-paternity-test-because-genes-in-his-saliva-are-different-to-those-in-sperm-a6707466.html

When the Belgian model revealed she was intersex earlier this year, she gave voice to something she'd always been told to hide. Here, the face of Balenciaga talks about knowing she was different. https://www.theguardian.com/fashion/2017/apr/23/intersex-and-proud-hanne-gaby-odiele-the-model-finally-celebrating-her-body

Trying to Move Forward after the death of my twin child… source

Boy and girl, now four, are only the second case of ‘sesquizygotic’ twins recorded source [source]

Little Payelon Givens’ skin tells quite a story. That’s where he carries a reminder of his twin sister. Twins are rare. The CDC estimates about 32 of every 1,000 births involve twins. Payelon’s mother KisLevonia Givens was carrying twins when she experienced something even more rare: ‘Vanishing Twin Syndrome’ source

Twins can be a lot more complicated than just identical or fraternal, and the rarer types of twins suggest that we have a lot more to learn about human development.

Inspired by the documentary “Three Identical Strangers,” Michele Mordkoff and Allison Kanter discover they are twins and have an emotional reunion on camera. Read more: https://www.theatlantic.com/video/ind… “Two Identical Strangers” was directed by Tim Wardle. Courtesy of Neon, it is part of The Atlantic Selects, an online showcase of short documentaries from independent creators, curated by The Atlantic.

Human chimeras are more common than you might expect. In Greek mythology, a chimera was  a fire-breathing creature  with physical traits of a lion, goat, and dragon. In human beings, a chimera is a person who has two totally different sets of DNA inside their body. It’s a bit less dramatic than a fire-breathing monster, sure, but it’s still pretty wild. Even wilder: Human chimeras aren’t the result of futuristic genetic tinkering. They can occur naturally, and some people don’t even know that they’ve doubled up on DNA. Here’s a quick guide to the ways a person can become a human chimera. It can happen after a bone marrow transplant Bone marrow  is the tissue inside our bones that’s responsible for making white blood cells, red blood cells, and platelets. In bone marrow transplants, doctor uses chemotherapy or radiation to destroy all the recipient’s diseased bone marrow, then a donor’s healthy marrow is put in its place. The donor...

Event Date: Sunday, September 17, 2017 at 2:00 pm Speaker: Dr. Nancy Segal Dr. Nancy Segal, the world’s leading expert on twins, has a new book that sheds light on over 70 commonly held ideas and beliefs about the origins and development of identical and fraternal twins. Using the latest scientific findings from psychology, psychiatry, biology, and education, Dr. Segal separates fact from fiction. Each idea about twins is described, followed by both a short answer about the truth, and then a longer, more detailed explanation. Coverage includes embryology of twins, twin types, intellectual growth, personality traits, sexual orientation of twins, marital relationships, epigenetic analyses, the frequency of different twin types and the varieties of polar body twin pairs. This book, and Salon with Dr. Segal, will inform and entertain behavioral and life science researchers, health professionals, twins, parents of twins, and anyone interested in the fascinating topic of twins and what the...