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Description
Flashcards by raffia.khalid99, updated more than 1 year ago
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Created by raffia.khalid99
over 9 years ago
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| Question | Answer |
| What are disorders such as Hungtington's disease and Cystic Fibrois caused by? | A faulty allele |
| Which of these two disorders is caused by a dominant allele? - Hungtington's disease - Cystic Fibrosis | Hungtington's Disease |
| What are the symptoms of Hungtington's disease? | -Late onset - Tremors - Clumsiness - Memory Loss - Lack of Concedntration - Mood Swings |
| What are the symptoms of Cystic Fibrosis? | - Thick Mucus - Difficulty digesting food - Chest Infections - Difficulty breathing |
| What is a "carrier" of a disease? | A person who carries only one recessive allele for a gene, meaning they do not have the disease themselves but they can pass it on to their children |
| A is the dominant, Hungtington's Disease allele. a is the healthy allele. What is the % risk of the offspring having and not having Hungtington's disease? | having - 75%, not having - 25% |
| What is pre-implantation genetic diagnosis? | -Fertility drugs are taken by a woman to allow her to release several eggs, which the doctor collects. -The eggs are fertilised in a petri dish through IVF -When these embryos reach the 8 cell stage, one cell is removed from each embryo and tested for a disease -Embryos that dont contain the faulty allele are reinserted into the uterus in hopes of producing a healthy baby |
| What are the ethical issues with preimplantation genetic diagnosis? | -False positive/negative results -Get rid of the rest of the embryos - are embryos life? -You should love your children whether they have a disease or not |
| Name the benefits and risks of testing the fluid surrounding a baby's womb? | Benefits - can test for genetic disorders - Can prepare for any genetic disorders - Risks- risk of miscarriage - False positive/negative results - What to do afterwards....abort? |
| What is predictive testing? + risks / benefits | detectc genetic disorders where the symptoms develop later in life, such as Huntington’s disorder. -can be valuable to people who have no symptoms but have a family member with a genetic disorder. -can help to inform decisions about possible medical care. -no / more expensive life insurance |
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