4.6.1.7 Inherited Disorders Flashcards
1
Q
How are inherited disorders caused?
A
- inheritance of certain alleles
2
Q
What is polydactyly and how is it caused?
A
- having extra fingers or toes
- caused by a dominant allele
3
Q
What is cystic fibrosis and how is it caused?
A
- disorder of cell membranes
- caused by a recessive allele
4
Q
What is embryonic screening?
A
- allows scientists to observe whether the child will have a genetic condition or not
5
Q
How does embryonic screening work?
A
- if embryo is developed in the lab, cells can be taken from it and analysed
- DNA from embryos in the womb can also be extracted
6
Q
What are the arguments for embryonic screening?
A
- reduces number of people suffering
- treating disorders is very expensive
- there are many regulations in place to stop it getting out of hand
7
Q
What are the arguments against embryonic screening?
A
- could encourage people to pick characteristics - creating designer babies
- it is expensive to carry out screening
- may promote prejudice as it suggests those with genetic disorders will not live a full life or are unwanted
- decisions about terminating a pregnancy have to be made
- procedure can lead to miscarriage
8
Q
A
