Twins of different colour

The odds against of a mixed race couple having twins of dramatically different colour are a million to one.Skin colour is believed to be determined by up to seven different genes working together.If a woman is of mixed race, her eggs will usually contain a mixture of genes coding for both black and white skin.

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Similarly, a man of mixed race will have a variety of different genes in his sperm. When these eggs and sperm come together, they will create a baby of mixed race.
But, very occasionally, the egg or sperm might contain genes coding for one skin colour. If both the egg and sperm contain all white genes, the baby will be white. And if both contain just the versions necessary for black skin, the baby will be black.For a mixed-race couple, the odds of either of these scenarios is around 100 to one. But both scenarios can occur at the same time if the woman conceives non-identical twins, another 100 to one chance.
This involves two eggs being fertilised by two sperm at the same time, which also has odds of around 100 to one.If a sperm containing all-white genes fuses with a similar egg and a sperm coding for purely black skin fuses with a similar egg, two babies of dramatically different colours will be born.
The odds of this happening are 100 x 100 x 100 - a million to one.




JULY 11 2008

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The twin boys, named Ryan and Leo, are the offspring of a mixed-race couple.
The mother, Florence, hails from Ghana in western Africa, and dad, Stephan, is from Potsdam in Germany. "Ryan came first, and everything was as usual," said the hospital's doctor, Birgit Weber. "But when Leo was born, I couldn't believe my eyes."
"Both kids have definitely the same father," the doctor added.
The first baby, Ryan, has light skin and blue eyes. His brother, Leo, is dark skinned with brown eyes.

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February 24, 2006

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When Kylie Hodgson gave birth to twin daughters by caesarean section, she was just relieved that they had arrived safely.
It was only when the midwife handed them over for her to hold that she noticed the difference between them.Remee, who weighed 5lb 15oz, was blonde and fair skinned. Her sister Kian, born a minute later weighing 6lb, was black.
"It was a shock when I realised that my twins were two different colours," said Kylie, 19. "But it doesn't matter to us - they are just our two gorgeous little girls." The amazing conception happened after two eggs were fertilised at the same time in the womb.Both Kylie and her partner Remi Horder, 17, are of mixed race. Their mothers are both white and their fathers are black.

 

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