Sex-linked diseases are passed down through families through one of the X or Y chromosomes. X and Y are sex chromosomes. Dominant inheritance occurs when an abnormal gene from one parent causes disease, even though the matching gene from the other parent is normal. There are several disorders that are caused by abnormal sex-linked traits. A common Y-linked disorder is male infertility. In addition to hemophilia, other X-linked recessive disorders include color blindness, Duchenne muscular dystrophy, and fragile-X syndrome.
Sex-Linked Disorder: A genetic disorder caused by a change in a gene or genes that are located on the sex chromosomes. Sperm: A cell produced in the male testes that can fertilize a female egg. Trimesters: The three 3-month periods into which pregnancy is divided. Trisomy: A condition in which there is an extra chromosome. ii. X-linked Dominant Diseases: Vitamin D resistant rickets with hypophosphatemia, some types of ectodermal anidrotic dysplasia, genetic defects of the enzyme glucosephosphate dehydrogenase, or skin disease with additional symptoms such as missing teeth, oro-facio-digital syndrome (like cleft palate with other cleavages in the oral area), syndactyly, the defective enamel of the teeth.
rows · The following is a list of genetic disorders and if known, type of mutation and the . Biology-online is a completely free and open Biology dictionary with over 60, biology terms. It uses the wiki concept, so that anyone can make a contribution.