smal
Forum Guru
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a 4 yr old gal had inc. diff. climbing stairs over past 3 months.she has a N identical twin sister and an 8 yr old brother with similar problems.he has been diagnosed with Duchenne's dystrophy.
which of the foll. best explains the discondance in the identical twin
1. parental genomic imprinting
2. Skewed X inactivation
3. SRY gene transaction
4. trineuceotide triple trpeat
5. uniparental disomy
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remedy for weakness is not brooding over it ,but thinking of strength.
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| blueocean
Forum Senior
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2- Duchenne is X linked recessive so if the girl has the disease must has the father's X chromosome inactive.
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| smal
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thnaks ocean.
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remedy for weakness is not brooding over it ,but thinking of strength.
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| twesting2173
Forum Senior
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the father's or the mothers? if it's x linked, i think it's the mom that is passing it on. pls correct if wrong. thanks.
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| fox
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The recessive copy of the allele in the normal twin would have been inactivated by turning into barr body. The copy of the allele that is inactivated is random & unpredictable.
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| rubina
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skewed x inactivation
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| docswapna
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yes. nice explanation by fox..
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| ManuNastai
Transilvanian..
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2
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| klimt
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agree 2
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