International Current Affairs - 2019
Latest International Current Affairs 2019 with news summaries and current events in International developments, geopolitical, organizations, groupings and fora related updates for India and world with all important national news updates and events for the year 2019.
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World no.1 American tennis player Serena Williams defeated her Russian opponent Maria Sharapova to clinch the French Open 2013 women’s title.
This victory brought up her 16th grand slam title, taking her to within two of the great 1980s duo of Chris Evert and Martina Navatilova.
Researchers at the King’s College London have claimed to have developed a more accurate test for Down’s syndrome which can also be given earlier in pregnancy than current tests.
The newly developed testing method in non-invasive and involves the test of foetal DNA in maternal blood to find the possibility of Down’s in the baby with high accuracy. Unlike existing tests, the latest technique has no chances of causing miscarriage. It could reduce the number of high risk women needing an invasive test by adding an extra level of screening.
In UK, all the pregnant women are offered Down’s testing. These tests initially use ultrasound, during which a pocket of fluid at the back of a baby’s neck – the nuchal translucency – is measured. Babies with Down’s syndrome tend to have more fluid than normal. If it shows positive, the women are advised to undergo further testing like Amniocentesis or Chorionic Villus Sampling which are invasive procedure and carry 1% chance of miscarriage.
What is Down’s syndrome?
Down’s syndrome, also known as trisomy 21, is a genetic disorder caused by the presence of all or part of a third copy of chromosome 21.Down’s syndrome is the most common chromosome abnormality in humans.It is typically associated with a delay in cognitive ability (mental retardation, or MR) and physical growth, and a particular set of facial characteristics.
Effects of Down’s on IQ:
The average IQ of young adults with Down syndrome is around 50, whereas young adults without the condition typically have an IQ of 100.A large proportion of individuals with Down syndrome have a severe degree of intellectual disability.