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Related to twins: fraternal twins


Two offspring from a single pregnancy. Twins may be derived from a single fertilized egg that separates into two after the first division. Such monozygotic twins are genetically identical. Alternatively, twins may be derived from two eggs fertilized at the same time. Such twins are dizygotic and non-identical and in about half the cases are of different sex. The rate of monozygotic twinning in humans is fairly stable at 0.35 per cent, while the rate of dizygotic twinning varies more widely around an average of 1 per cent of pregnancies.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005


two offspring born at the same time of the same mother. See DIZYGOTIC TWINS, MONOZYGOTIC TWINS.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005

Patient discussion about twins

Q. anything a mother should know about the last period of twin pregnancy? she is in her 7th month and starting to be real heavy... her legs hurt like crazy. anything to help her with?

A. thanks for all the information! I hope everything will go on well...

Q. Is there a bigger risk of autism for the newborn in twin pregnancy?

A. thanks Dominicus!
you're great...

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References in periodicals archive ?
Growing up, twins may feel that parents and school are usually referring to them as one.
MCDA-Monochorionic diamniotic twin, RFA- Radiofrequency ablation.
"As identical twins we are always thrilled when we come across new sets of twins, which is what inspired the book.
You don't need to be an expert on monochorionic twins; you just need to know if the patient is at high risk because of monochorionicity.
Although conjoined twins, especially thoracopagus type, are known to present several cardiac anomalies, a shared single four-chambered heart with triple-outlet left ventricle is a rare condition.
The Antepartum complications noted in the 15 monochronoic twins included: discordant fetal growth in 2 (13%) cases, low birth weight in 11 (73%) babies, pre-eclampsia in 3.
According to the DHA statistics, government hospitals in Dubai accounted for the birth of 1,563 twins, followed by 228 triplets, 11 quadruples, five quintiples and two conjoined twins between 2010 and 2012.
The village is so proud of its apparently special twinning powers that it launched an annual 'twin' festival five years ago, a reunion to which every pair of local twins, both young and old, is invited each spring.
Those twins separated in the early childhood years of school may suffer anxiety or fear, since twins, especially MZ twins, are very much attached to each other (DiLalla & Mullineaux, 2008; van Leeuwen et al., 2005).
Experts who have visited the remote tropical village of Kodinhi, in Kerala, have been left scratching their heads over the phenomenon that has seen almost six times as many twins born than the global average.
Twins offer scientists the perfect opportunity to study what makes people who they are, Segal says.
In a diagnostic matchmaking group exercise the expert twins (Kohat, Bannu, Timergarra) and recipient twins (Khar, Miranshah, Sadda and Parachinar) agreed on sub-areas of twinning support.