exam questions

•  

  Name a prenatal test (1) 

  -       Chronic villus sampling 
• Explain why this couple may choose not to have this test (3)

  -       Risk of miscarriage 

  -       False positive may lead to the termination of a healthy foetus

  -       Prenatal testing/abortion may be against moral/ethical or religious belief of the parent
• State and justify a suitable method of collecting cells for prenatal testing (3) 

  -       Chronic villus sampling 

  -       Cells taken from placenta between 10-14 weeks of pregnancy 

  -       Can terminate a very unhealthy/ill child
• State and justify a suitable method of collecting cells for prenatal testing (3) 

  -       Amniocentesis 

  -       Amniotic fluid containing cells collected between 14-20 weeks of pregnancy 

  -       Lower risk of miscarriage.
• Explain one ethical issue relating to the use of prenatal genetic screening (2)

  -       Can lead to a false positive result

  -       Therefore, may lead to the termination of a healthy foetus
• Describe one advantage and one disadvantage to these parents of genetic screening of their foetus (2)

  -       One advantage is they can decide to terminate an unhealthy baby 

  -       There is a risk of miscarriage