w**********9
发帖数: 242 | 1 There is a girl of seven years old, with a progressive muscle weakness and
is diagnosed with Duchenne muscular dystrophy. She has a normal identical
twin sister and another brother with no problems. What is the reason her
identical twin sister does not have the disease ?
A), parental imprinting
B), Screwed X inactivation
C), Trinucleatide repeat
D), Genetical anticipation
E), Variable expression
which one is the reason? Or anybody could give better answer to this
question.
thanks. | n********k
发帖数: 2818 | 2 hard nut? DMD nornally happen to males, right? one would need more
information, regartding their parents
etc...anyway, i am not familiar with the area but just curious about it...
【在 w**********9 的大作中提到】
: There is a girl of seven years old, with a progressive muscle weakness and
: is diagnosed with Duchenne muscular dystrophy. She has a normal identical
: twin sister and another brother with no problems. What is the reason her
: identical twin sister does not have the disease ?
: A), parental imprinting
: B), Screwed X inactivation
: C), Trinucleatide repeat
: D), Genetical anticipation
: E), Variable expression
: which one is the reason? Or anybody could give better answer to this
| s******y
发帖数: 28562 | 3 Most likely B
【在 w**********9 的大作中提到】
: There is a girl of seven years old, with a progressive muscle weakness and
: is diagnosed with Duchenne muscular dystrophy. She has a normal identical
: twin sister and another brother with no problems. What is the reason her
: identical twin sister does not have the disease ?
: A), parental imprinting
: B), Screwed X inactivation
: C), Trinucleatide repeat
: D), Genetical anticipation
: E), Variable expression
: which one is the reason? Or anybody could give better answer to this
| s******y
发帖数: 28562 | 4 I think it is a take home question from a class, so don't take it too
serious
【在 n********k 的大作中提到】
: hard nut? DMD nornally happen to males, right? one would need more
: information, regartding their parents
: etc...anyway, i am not familiar with the area but just curious about it...
| n***w
发帖数: 2405 | | l*****a
发帖数: 1431 | 6 B,x-linked recessive disorder | H*********1
发帖数: 56 | 7 You are so NIU:)
【在 n***w 的大作中提到】
: B.
: if you wanna the explanation, read this paper:
: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1683658/
| n********k
发帖数: 2818 | 8 but my question is: are there any other possibilities?
【在 n***w 的大作中提到】
: B.
: if you wanna the explanation, read this paper:
: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1683658/
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