人類23對染色體，長度及基因數(shù)如下： Chromosome 1: 250Mb, 3380genes; Chromosome 2: 234Mb, 2204genes;? ?Chromosome 3: 198Mb, 1760genes; Chromosome 4: 191Mb, 1361genes; ? Chromosome 5: 181Mb, 1536genes; Chromosome 6: 171Mb, 1959genes;? ?Chromosome 7: 159Mb, 1764genes; Chromosome 8: 146Mb, 1247genes;? ?Chromosome 9: 141Mb, 1435genes; Chromosome 10: 136Mb, 1305genes;? Chromosome 11: 135Mb, 2051genes; Chromosome 12: 134Mb, 1629genes;? ?Chromosome 13: 115Mb, 649genes; Chromosome 14: 107Mb, 1453genes;? ?Chromosome 15: 103Mb, 1202genes; Chromosome 16: 90Mb, 1318genes;? ?Chromosome 17: 81Mb, 1714genes; Chromosome 18: 78Mb, 517genes Chromosome 19: 59Mb, 1992genes; Chromosome 20: 63Mb, 857genes;? Chromosome 21: 48Mb, 425genes; Chromosome 22: 51Mb, 835genes;? Chromosome X: 155Mb, 1606genes; Chromosome Y: 59Mb, 397genes

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