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Old 06-17-2011
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Genetics Type of mitochondrial disease inheritance!

Mitochondrial diseases have which type of inheritance
1- Autosomal Dominant
2- Autosomal recessive
3- X linked
4- Semidominant

(i dont know the answer , can anyone explain this plz)
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Old 06-17-2011
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doesnt it have its own mode of inheritance (mitochondrial inheritance) i also have no idea what the answer cud be....

i read somewhere that its also called mitochondrial recessive inheritance...
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Old 06-17-2011
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As far as i know Mitochondrial Inheritance is by its own a "mode of inheritance". It is Variable expresion and its only transmitted only through the mother. It shows a Heteroplasmy pattern, Can be Dominant, recessive , X-Linked...
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Old 06-17-2011
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Default mtDNA

As posted before, mitochondrial diseases have their own kind of inheritance, this is due to the fact that mitochondria have their own type of DNA (mtDNA-mitochondrial DNA) which is in its majority inherited from the mother (maternally inherited). Mechanisms for this include simple dilution (an egg contains 100,000 to 1,000,000 mtDNA molecules, whereas a sperm contains only 100 to 1000), degradation of sperm mtDNA in the fertilized egg, and, at least in a few organisms, failure of sperm mtDNA to enter the egg. Whatever the mechanism, this single parent (uniparental) pattern of mtDNA inheritance is found in most animals.
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Old 06-18-2011
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Listening ? semidominant ?

Hi,
one of our members posted his exam experience and mentioned this question in it, he picked SEMIDOMINANT as answer , so i was concerned that what would be the right answer among these choices which he had in his real test,

considering this what would be the most appropriate answer
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Old 06-18-2011
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ruling out all other i would also select semidominant.
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