Breeding experiments with Lepidoptera. X-linked dominant. In humans, these are termed X-linked recessiveX-linked dominant and Y-linked. Chapter Population and Community Ecology. And so some of the more familiar sex-linked traits are hemophilia, red-green color blindness, congenital night blindness, some high blood pressure genes, Duchenne muscular dystrophy, and also Fragile X syndrome.
Main article: X-linked dominant inheritance. Updated by: Anna C.
Nakamura, Akinori. If the father is affected, the son will not be affected, as he does not inherit the father's X chromosome, but the daughter will always be a carrier and may occasionally present with symptoms due to aforementioned skewed X-inactivation.
Only females are able to be carriers for X-linked conditions; males will always be affected by any X-linked condition, since they have no second X chromosome with a healthy copy of the gene. Learning Objectives Distinguish between sex-linked traits and other forms of inheritance. Provide feedback to your librarian.
Sex linked Sexburga c. Sexagenarian Law. Sex Pistols. Discoveries in fruit fly genetics can be applied to human genetics. The sperm cell determines the sex of an individual.
Please check your Internet connection and reload this page. Sex-influenced or sex-conditioned traits are phenotypes affected by whether they appear in a male or female body. Help Community portal Recent changes Upload file. In each pregnancy, if the mother is a carrier of a certain disease she has only one abnormal X chromosome and the father is not a carrier for the disease, the expected outcome is:.