The Briefing Room
General Category => Science, Technology and Knowledge => Topic started by: Machiavelli on February 28, 2019, 11:55:40 pm
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Nicola Davis
The Guardian
February 27, 2019
Boy and girl, now four, are only the second case of ‘sesquizygotic’ twins recorded
A pair of twins have stunned researchers after it emerged that they are neither identical nor fraternal – but something in between.
The team say the boy and girl, now four years old, are the second case of semi-identical twins ever recorded, and the first to be spotted while the mother was pregnant.
The situation was a surprise to the researchers. An ultrasound of the 28-year old mother at six weeks suggested the twins were identical – with signs including a shared placenta. But it soon became clear all was not as it seemed.
More (https://www.theguardian.com/science/2019/feb/27/scientists-stunned-discovery-semi-identical-twins)
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Fascinating.