The fates of a million implanted human zygotes 1,000,000 conceptions 150,000 spontaneous abortions 850,000 live births 833,000 children 17,000 perinatal deaths 75,000 chromosome abnormalities 39,000 trisomics (3,510 trisomy 21) 5,165 chromosome abnormalities 13,500 XO 1,849 sex chromosome aneuploids 1,427 males 422 females F 12,750 triploids – 4,500 tetraploids 42 trisomy 13 100 trisomy 18 1,041 trisomy 21 1,183 autosomal 5,250 others trisomics 758 balanced Robertsonian translocations 758 balanced reciprocal translocations 117 inversions 500 unbalanced structural aberrations FIGURE 17-37 The proportion of chromosomal mutations is much higher in spontaneous abortions. [Data from K. Sankaranarayanan, Mutat. Res. 61, 1979, 249–257)]
The fates of a million implanted human zygotes 1,000,000 conceptions 150,000 spontaneous abortions 850,000 live births 833,000 children 17,000 perinatal deaths 75,000 chromosome abnormalities 39,000 trisomics (3,510 trisomy 21) 5,165 chromosome abnormalities 13,500 XO 1,849 sex chromosome aneuploids 1,427 males 422 females F 12,750 triploids – 4,500 tetraploids 42 trisomy 13 100 trisomy 18 1,041 trisomy 21 1,183 autosomal 5,250 others trisomics 758 balanced Robertsonian translocations 758 balanced reciprocal translocations 117 inversions 500 unbalanced structural aberrations FIGURE 17-37 The proportion of chromosomal mutations is much higher in spontaneous abortions. [Data from K. Sankaranarayanan, Mutat. Res. 61, 1979, 249–257)]
Human Physiology: From Cells to Systems (MindTap Course List)
9th Edition
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Lauralee Sherwood
Chapter20: The Reproductive System
Section: Chapter Questions
Problem 11RE
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Using Figure 17-37, calculate what percentage of conceptions are triploid. The same figure shows XO in the spontaneous-abortion category; however, we know that many
XO individuals are viable. In which of the viable categories would XO be grouped?
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