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4.6 inheritance, variation and evolution
4.6.1 reproduction
4.6.1.7 inherited disorders
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Created by
Vicky B
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Cards (8)
What are genetic disorders caused
by?
The inheritance of certain alleles
What is polydactyly?
Having
extra
fingers
or
toes
what is polydactyly caused by?
a
dominant allele
what is cystic fibrosis?
a disorder of
cell membranes
what is cystic fibrosis caused by?
a
recessive allele
What is embryonic screening?
Process of testing embryos for
genetic disorders
what are the arguments against embryonic screening?
Implies people with genetic diseases are
‘undesirable’
Slippery-slope
argument - eventually people would want to pick other
traits
over others
Screening is
expensive
Dangerous - can lead to
miscarriages
what are the arguments for embryonic screening?
Helps stop people
suffering
Treating disorders is
expensive