4 thoughts on âGolf Carts: Fairway or Rough?â. Iâve heard that the issue is the grass type, rather than the generic fairway or rough. Apparently carts do more damage to fescue (typically a rough grass) than typical fairway grass (whatever that may be). My club is almost exclusively walking, and our fairways and rough are both fescue. Where to drive is a source of controversy on the rare occasion a cart is used.
In addition, enzymes add methyl groups to the DNA of the inactive X, resulting in repression of transcription. The inactivated X is visible during interphase in mitosis as a condensed chromosome, called a Barr body. It replicates in the S (synthesis) phase of the cell cycle later than does the active copy. Inactivation of one of the two X copies in a female leaves only one active. X chromosome in any cell. An individual who has three X chromosomes has two inactivated copies of the X, producing two Barr bodies.
The inactivation occurs early in development when the embryo consists of only a few cells. The inactivation is random â one X chromosome may be turned off in one cell and the other X chromosome inactivated in a neighboring cell.Once a chromosome is turned off it remains turned off in all descendent cells. With respect to their X chromosomes, female mammals are chimeras.A chimera is an organism composed of different genotypes. Some areas of their bodies have one X chromosome turned off and other areas have the other X chromosome inactivated.An example of X-linked chimeras that can be seen visually are female cats that are heterozygous at the orange coat color locus. Orange is a locus on the X chromosome.ome areas of their bodies have one X chromosome turned off and other areas have the other X chromosome inactivated. An example of X-linked chimeras that can be seen visually are female cats that are heterozygous at the orange coat color locus. Orange is a locus on the X chromosome.