Sex-linked Genes/Traits Biomedical Sciences Coursework (Coursework Sample)

NAME OF TRAIT

LINKED TO (X or Y)

PHENOTYPIC MANIFESTATIONS

PREVALENCE IN PLACES OR RACES

Hemophilia

X

Excessive Bleeding causing damage to body tissues.

Men

Fragile-X syndrome

X

-Mental Retardation

Men

Duchenne muscular dystrophy

X

-Weakening of the legs when the boy is at age 3.
-Death before 30

Boys

Red-Green Colour Blindness

X

-Failure to differentiate between red and green.


male pattern baldness

X

-Hairline on the head that forms an M shape.

Adult men

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References
Unger WP, Unger RH, Wesley CK. Androgenetic alopecia. In: Lebwohl MG, Hey