Chromosome 21: Difference between revisions
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Humans have 23 pairs of chromosomes (including sex chromosomes). The twenty first pair of chromosomes is described as chromosome 21. During DNA replication, if the spindle fibres fail to separate the chromosomes apart equally, daughter will result in either monosomic or trisomic. Trisomy 21 is the cause of Down Syndrome. | Humans have 23 pairs of chromosomes (including sex chromosomes). The twenty first pair of chromosomes is described as chromosome 21. During DNA replication, if the spindle fibres fail to separate the chromosomes apart equally, daughter will result in either monosomic or trisomic. [[Trisomy_21|Trisomy 21]] is the cause of [[Down_Syndrome|Down Syndrome]]. | ||
Revision as of 23:28, 24 October 2012
Humans have 23 pairs of chromosomes (including sex chromosomes). The twenty first pair of chromosomes is described as chromosome 21. During DNA replication, if the spindle fibres fail to separate the chromosomes apart equally, daughter will result in either monosomic or trisomic. Trisomy 21 is the cause of Down Syndrome.