Genetic Screening.

Genetic Screening is the process of checking an individual for signs of genetic diseases or defects. Ideally, this is unremarkably performed before a electric razor is born in mark to determine the genetic defects, if some(prenominal) the unborn child carries. The p arents may then decide if an abortion should be carried give away with advice from a doctor. There are two main methods of carrying step up genetic screening, namely amniocentesis and chorionic villus take. In chorionic villus sampling, a o.k. catheter is passed through the vagina and cervix and through the placenta where the chorionic villi are located. A small sample of cells is carefully extracted. These cells are genetically identical to the fetus as they are derived from the zygote. Therefore these cells give the gate be studied and checked for any defects. This method shadower be used very early during maternal quality,(8-12 weeks) besides there is a greater risk of a miscarriage. In amniocentesis, a th in chivy is passed through the abdomen and just about 20cm3 of amniotic fluid is interpreted out. A local anaesthetic agent is needed in this case. Again, the cells of the amniotic fluid contains cells derived from the zygote and so screening of these cells will be able to determine if any genetic defects are present. amniocentesis must be performed by and by on in the pregnancy than in chorionic villus sampling but there is less(prenominal) of a risk of having a miscarriage. If you wish to get a full essay, order it on our website: OrderCustomPaper.com

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