This is the larger of two structures in which the PAR1 region is present. CGG repeats in this structure cause partial methylation of the FMR1 gene, leading to a disease named for this structure that causes mental retardation. All but one of these structures per cell are inactivated via conversion to heterochromatin in a process called lyonization, which forms Barr bodies. While people with a trisomy of this chromosome are
This is the larger of two structures in which the PAR1 region is present. CGG repeats in this structure cause partial methylation of the FMR1 gene, leading to a disease named for this structure that causes mental retardation. All but one of these structures per cell are inactivated via conversion to heterochromatin in a process called lyonization, which forms Barr bodies. While people with a trisomy of this chromosome are phenotypically normal, those with a monosomy of it present with Turner syndrome. Red-green color blindness and hemophilia are recessive traits on this chromosome. For 10 points, name this sex chromosome which is present in both women and men. 
This is the larger of two structures in which the PAR1 region is present.
X chromosome 