Science Quiz / Genetic Disorders

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Can you name the Genetic Disorders?

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CharacteristicGenetic DisorderPresentation(Inheritance Pattern)
Deletion or inactivation of normally active maternal allele on chromosome 15MR, seizures, ataxia, inappropriate laughter
Deficiency in PAH or THBReduced metabolism of phenylalanine leading to MR
Fibrillin gene mutationTall with long extremities,pectus excavatum(AD)
Absence of galactose-1-phosphate uridyltransferaseInability to metabolize galactose(AR)
Microdeletion at chromosome 22q11Variable presentation, CATCH(AD)
Mutation in FGFR3 gene causing abnormal cartilage formationDwarfism, short limbs(AD)
Deficiency in lysosomal enzyme Hexosaminidase AProgressive neurodegeneration, devel. delay, red spot on macula(AR)
Trinucleotide expansion in 3' UTR of DMPKOnset early adulthood, myotonia(AD)
Mutations in genes involved with collagenHyperextensible skin, easy bruising, hypermobile joints(most AD)
Mutation in DMD gene coding for dystrophinGower's sign, large calves(XR)
CharacteristicGenetic DisorderPresentation(Inheritance Pattern)
Methylation and expression of FMR1 affected by deletion or trinucleotide repeatMacro-orchidism, large jaw, large ears(XD)
Defect in CFTR gene leading to abnormal CFTR channelExcess mucus production, coughing, frequent pulmonary infections(AR)
Germline mutation of p53 tumor suppressor geneIncrease susceptibility to cancer(AD)
Trinucleotide expansion in exon of HTT gene leading to altered proteinChorea, preceded by personality change, present ~40 yoa(AD)
Deficiency in BCKD leading to builup of branched chain A.A.sSweet smelling urine, infants healthy at birth but have sever brain damage if untreated
Long repeats in FRDA gene results in dimished frataxin and impairment in mitochondrial functioningStaggering gait, weakness(AR)
Trisomy 21MR, flat facies
Deficiency in lysosomal enzyme beta-glucocerebrosidaseHepatospenomegaly, Gaucher's cells(AR)
Deletion or inactivation of normally active paternal allele on chromosome 15MR, hypotonia, obesity, hypogonadism
Absense or dysfunction of lysosomal enzyme alpha-galactisidase APeripheral neuropathy, angiokeratomas(XR)

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