This object is created by the expression of the non-coding mRNA XIST (EX-ist), and is formed by a process called Lyonization.
The Eed-Enx1 complex is required to stabilize these structures, which show characteristic ubiquitination of histone H2A. These objects characteristically exclude the RNA of the Cot-1 gene, and its existence was first theorized because carriers of the gene for G6PD deficiency would sometimes show symptoms. The histone variant macroH2A localizes to this structure, which can usually be seen in the periphery near the nuclear envelope. This object is created by the expression of the non-coding mRNA XIST (EX-ist), and is formed by a process called Lyonization. The fact that the creation of this entity is random leads to the tortoiseshell fur color of Calico cats. For 10 points, identify this genetic feature found only in women, an inactive X chromosome.
The Eed-Enx1 complex is required to stabilize these structures, which show characteristic ubiquitination of histone H2A. These objects characteristically exclude the RNA of the Cot-1 gene, and its existence was first theorized because carriers of the gene for G6PD deficiency would sometimes show symptoms.
Barr Body [accept inactive X chromosome until mention, prompt on X chromosome]