GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -You’re usually only at risk of developing it if one of your parents has or had it. Both men and women can get it. If a parent has the Huntington’s disease gene, there’s a: 1 in 2 (50%) chance of each of their children developing the condition – affected children are also able to pass the gene to any children they have.
Detailed explanation-2: -With dominant diseases like Huntington’s Disease (HD), it is usually pretty easy to figure out risks. Generally if one parent has it then each child has a 50% chance of having it too. And if neither parent has the disease, then odds are that none of the kids will either. Huntington’s is a dominant genetic disease.
Detailed explanation-3: -A person with a Huntington’s disease affected parent has a 50% risk of having inherited the Huntington’s disease gene. Each child of that person has a 25% chance of inheriting the condition.
Detailed explanation-4: -It is passed on from parents to children. If a parent has Huntington disease, the child has a 50% chance of developing it. If the child doesn’t develop the disease, he or she won’t pass it along to his or her children. For 1% to 3% of people with Huntington disease, no family history of the disorder is ever identified.
Detailed explanation-5: -Every child conceived naturally to a parent who has the faulty gene has a 50 % chance of inheriting it and the disease. If both parents have the faulty gene the child has a 75 % chance of inheriting it.