Genetics Research International / 2012 / Article / Fig 1

Review Article

Finding a Balance: How Diverse Dosage Compensation Strategies Modify Histone H4 to Regulate Transcription

Figure 1

X chromosome dosage compensation. Dosage compensation balances expression of the X chromosomes between males and females and equalizes expression between the X and autosomes. In male flies, the single X chromosome is upregulated. C. elegans upregulates the X chromosomes in hermaphrodites and males, and the dosage compensation complex functions in hermaphrodites to downregulate transcription two-fold. The X chromosomes are upregulated in female and male mammals, but one X chromosome is inactivated in females. Green text indicates upregulation, and red text indicates downregulation. Yellow boxes depict chromosomes that are targeted by specific dosage compensation mechanisms.
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