Use table to give the complete descriptive symbols for the chromosome arrangemen
ID: 34252 • Letter: U
Question
Use table to give the complete descriptive symbols for the chromosome arrangements of the following:
1. A boy having down syndrome
2. A man having klinefelter syndrome and one Barr body per nucleus
3. A woman having Turner syndrome
4. A male infant having cri du chat syndrome
5. A female newborn having trisomy 18(edwards syndrome)
6. A male having trisomy 13 (patau syndrome)
Phenotype or syndrome Total No. of chromosomes Sex chromosome complement Number of Barr Bodies per nucleus Normal Female 46 XX 1 Normal male 46 XY 0 Male with Klinefelter syndrome 47, 48, 49 XXY, XXXY, XXXXY 1, 2, 3 Female with turner syndrome 45 X 0 Male with XXY karyotype 47 XYY 0 Female with trisomy X 47 XXX 2 Down syndrome(trisomy 21) 47 XX or XY 1 if female, 0 if male Edwards syndrome(trisomy 18) 47 XX or XY 1 if female; 0 if male Patau syndrome (trisomy 13) 47 XX or XY 1 if female; 0 if maleExplanation / Answer
Condition Chromosome description 1. A boy having down syndrome. 47 XY +21 2. A man having klinefelter syndrome and one Barr body per nucleus. 47 XXY 3. A woman having Turner syndrome 45 XO 4. A male infant having cri du chat syndrome 46 XY 5p- 5. A female newborn having trisomy 18(edwards syndrome) 47 XX +18 6. A male having trisomy 13 (patau syndrome) 47 XY +13
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