What type of gene is considered recessive and located only on the x chromosome?
Sex linkage refers to when a gene controlling a characteristic is located on a sex chromosome (X or Y)
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X and Y chromosomes Understanding: • The pattern of inheritance is different with sex-linked genes due to their location on sex chromosomes
Inheritance of an X-linked Recessive Disease Condition Application: • Red-green colour blindness and haemophilia as examples of sex-linked inheritance
Haemophilia Haemophilia is a genetic disorder whereby the body’s ability to control blood clotting (and hence stop bleeding) is impaired
Red-Green Colour Blindness Red-green colour blindness is a genetic disorder whereby an individual fails to discriminate between red and green hues
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