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More broadly, he suggests governments may want to think about boosting education and genetic screening for couples entering cousin marriage - rather than imposing "blanket bans".

"I think there's even more of an emphasis on early genetic screening, at least to detect pregnancies that might be abnormal."

"All children with cerebral palsy merit modern genetic screening as early and customised interventions really can make a difference and improve their long-term outcomes," he said.

Recently, a high-throughput genetic screening of meiotic crossover rate mutants in Arabidopsis thaliana garnered the interest of the academic community by unraveling a century-old mystery in the life sciences.

Doctors also can’t make a firm diagnosis from a genetic screening, which is done at 10 weeks gestation or later.