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Q.

Do children born to cousins (brothers' children) carry a fear of producing defective future generations?

Asked by gem mina, 29 Jan '09 11:43 am
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Answers (4)

1.

If your question is "does marriage between first cousins lead to greater number of birth defects in their progeny?" then the answer is yes.

Extract from http://tinyurl.com/czxc4m
... the experience of researchers at Bradford Teaching Hospital suggests a more serious situation.

The hospital, which serves a community with a large Pakistani population, reports an unusually high rate of inherited gene disorders. Researchers estimate the rate of birth defects is 10 times higher than in the general population, spokeswoman Leanne Wilson said in a statement.

High rates of deafness, degenerative nerve disorders and children born with small heads and learning disabilities have been found, she said. The statement said marriage patterns among Pakistanis are likely to be a major factor in the rate.

Alastair Kent, director of the Genetic Interest Group in London, said the study was important because it quantified the elevated risk. The research is quite robust and it was pe ...more
Answered by Shahryar Pax, 30 Jan '09 07:15 am

 
  
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2.

Not necessarily. In fact a cousin sister(maternal uncle's daughter) lis considered a preferable match for keepin
Answered by radhikamruta, 29 Jan '09 11:54 am

 
  
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3.

In consanguineous marriages (marriage in blood relations) the chances of coming together of the defective recessive traits in the offsprings is more than in unrelated marriages.
Answered by mulkraj khajuria, 29 Jan '09 11:08 pm

 
  
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4.

Consanguineous marriage often lead to an increased birth prevalence of infants with severe recessive disorders.
Answered by Lion Heart, 29 Jan '09 11:45 am

 
  
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