Comments by "Banana" (@439bananas) on "Only Human"
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@youare5907 If you are speaking about my cousin, they had no idea that the family had a recessive gene disorder until the younger child started to repeatedly get broken bones and neither did social services. Their younger child was taken into care, where she continued to get broken bones and so was returned to them, this was back in the late 80s and the child then had genetic analysis. The older child was not ill, but could have been a carrier.
With recessive disorders, the children have a 25% chance of being affected by the condition, a 50% chance of being a carrier of the defective gene and a 25% chance of being neither affected or a carrier. So you can see that if a carrier of such a condition marries back into their own family, the chances of having an affected child are massively multiplied. My cousin, it turned out, was distantly related to her spouse, they did not know this at the time of their marriage and they must have both been carriers of the defective gene to have an affected child, but as I said they had the sense not to have any more children, unlike the folk in this video.
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