B1- You and your genes (B1.3)

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  • Created by: Mosope
  • Created on: 25-04-16 19:58
How are some disorders caused (2 examples)?
they are caused by faulty alleles of a single gene (including Huntington's disease and cystic fibrosis )
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What alleles is Huntington's disease caused by?
dominant alleles (H)
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What alleles is Cystic Fibrosis caused by ?
recessive alleles (ff)
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Symptoms of Huntington's disease?
late onset, tremor, clumsiness, memory loss, inability to concentrate, mood changes
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Symptoms of Cystic Fibrosis?
thick mucus, difficulty breathing, chest infections, difficulty in digesting food
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A person with one recessive allele (in a pair of alleles) will.... ?
they will not show the symptoms of the disorder, but is a carrier, and can pass the recessive allele to their children
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Who can genetic testing be used on ?
Embryos, children, adults
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Implications of genetic testing ?
1. Risk of miscarriage, 2. results may not be accurate e.g. false positive and false negative, 3. whether or not to have children at all, 4. whether or not a pregnancy should be terminated, 5. should other family members be informed
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Implications of testing embryos for embryo selection prior to implantation ?
1. miscarriage risk, 2. small risk of infection, 3. results not 100% reliable
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Implications of the use of genetic testing ?
insurance companies might refuse to give life insurance to people with the "wrong" alleles
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Uses of genetic testing ?
testing embryos for embryo selection (pre implantation), predictive testing for genetic diseases, testing an individual before prescribing drugs
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Other cards in this set

Card 2

Front

What alleles is Huntington's disease caused by?

Back

dominant alleles (H)

Card 3

Front

What alleles is Cystic Fibrosis caused by ?

Back

Preview of the front of card 3

Card 4

Front

Symptoms of Huntington's disease?

Back

Preview of the front of card 4

Card 5

Front

Symptoms of Cystic Fibrosis?

Back

Preview of the front of card 5
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