Screening for Genetic Disorders
- Created by: GingerDinosaur04
- Created on: 14-03-20 12:45
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- Screening for Genetic Disorders
- Screening Embryos
- First need to harvest cells from developing embryo/foetus
- 2 main ways it can be done
- Amniocentesis - carried out at 15-16 weeks of pregnancy & involves taking some fluid from around developing foetus which contains foetal cells used for gentic screening
- Chronic Villus Sampling - done between 10 & 12 weeks and involves taking small sample of tissue from developing placenta which contains foetal cells for screening
- Both tests have associated risk of causing miscarriage
- 2 main ways it can be done
- New methods depend on analysisng foetal cells found in mam's blood
- Promise less invasive testing in future
- Anotehr alternative is for embryos produced through IVF to be screened before being implanted in the mam so only babies without the disorder are born
- First need to harvest cells from developing embryo/foetus
- Carrying Out Screening
- If screening shows the child is affected the parents have a choice
- Keep baby
- Not have the implantation
- Get abortion
- If screening shows the child is affected the parents have a choice
- Concerns About Embryo Screening
- Risks of miscarriage even to healthy babies
- More reliable and accurate but still give false positives/negatives
- Can result in termination of healty baby or birth of a child with unexpected genetic disorder
- People have to make decisions on whether or not to keep their baby
- Might not be totally affected by scientific facts
- Could be affected by ethics or feelings
- Might not be totally affected by scientific facts
- Screening is expensive and at the moment can only be offered to people with family history of genetic disorders
- More children at ris of being born with gentic disorders
- Some believe everyone should be tested because genetic diseases cost too much to treat
- Could lead to demand for designer babies
- Untitled
- Screening Embryos
- If screening shows the child is affected the parents have a choice
- Keep baby
- Not have the implantation
- Get abortion
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