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X-linked characteristic
Any trait associated with a gene on the X chromosome will always be expressed in males because they only have one X chromosome (women have two). This holds true regardless if the gene is dominant or recessive. A gene that masks the effect of another gene is called a dominant gene. The gene whose expression is masked is known as a recessive gene. An example of an x-linked characteristic is color-blindness.
A trait that is associated with a gene carried on the x chromosome. The X chromosome is the female chromosome, which gets its name because it is shaped like the letter “X.” Chromosomes are structures made of protein that contain genes. Genes are units of material contained in a person's cells that contain coded instructions as for how certain bodily characteristics (such as eye color) will develop. All of a person's genes come from his/her parents.
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