Twin Zygosity DNA Testing

Determining whether twins are identical or fraternal is not always easy. Identical (monozygotic) twins are conceived when one egg is fertilized and splits into two separate cells resulting in twins with identical copies of DNA. Fraternal (dizygotic) twins are conceived when two eggs are released during ovulation and fertilized by separate sperm cells resulting in […]

Do Twins Really Have a Sixth Sense


Alexandra Blair, The Times 25th March 2009 Is there really such a thing as twintuition ? Are twins truly telepathically linked by a shared intuition?   Dr Lynne Cherkas, a genetic analyst at the department for twin research at King’s College London, and a non-identical twin herself, has spent years studying twins. She has come across […]

Twin terminology – what does it all mean ?

Twin Terminology There are 3 main reference points which you may hear a lot of from now on in. They include the chorion (placenta), the amnion (the sac containing fluid in which the baby grows) and the zygosity (referring to the egg). These terms refer to whether the babies have their own amniotic sac, their […]