Sex-linked genetic disorders

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Women have two X chromosomes, and men have one X chromosome and one Y chromosome. However, if a child inherits two genes with the defect, the child will develop the illness. Risk factors include older age in the woman, a family history of genetic abnormalities, a previous baby with a birth defect or miscarriage, and a chromosomal abnormality in one of the prospective parents.

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For example, a very small part of a chromosome may be missing called a microdeletion , or a chromosome may have a very small extra part called a microduplication. In most states, consanguineous marriages for example, marriage between first cousins are outlawed.

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Many common birth defects, such as heart malformations, are inherited in this way. Geneticists believe that each person probably carries about 5 to 10 defective recessive genes.

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Genetic disorders

Such disorders are known as multifactorial genetic disorders. Funded by The Josiah Macy, Jr. If the affected gene is dominant, a person with one or two copies of the gene will have the disorder. However, certain conditions increase risk.
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2 thoughts on “Sex-linked genetic disorders
  1. The reproductive cells, or eggs and sperm, each have only one set of 23 chromosomes. One way to treat patients with SCID is to completely enclose them in a large plastic bubble that protects them from germs present in the air.