Bone marrow is: Tissue in the center or hollow part of the bones. It makes red blood cells. Eventually white blood cells are manufactured. All of this is helps our immune system protect us from infection. Peace and good health. ...Read more
X-linked inheritance means that the gene causing the trait or the disorder is located on the X chromosome. Females have two X chromosomes, while males have one X and one Y chromosome.
Sex-linked Traits. If a gene is found only on the X chromosome and not the Y chromosome, it is said to be a sex-linked trait. Because the gene controlling the trait is located on the sex chromosome, sex linkage is linked to the gender of the individual. Usually such genes are found on the X chromosome. The Y chromosome is thus missing such genes (See Diagram above.).