A-LevelBiologyInherited changeMay/June 2019Paper 4 Q412 Marks
Oculocutaneous albinism (OCA) is a type of albinism. There are many different forms of OCA. OCA1A is one form of OCA, caused by a recessive mutation in the autosomal gene, TYR, coding for the enzyme tyrosinase. This enzyme is involved in the biosynthetic pathway that results in the production of melanin, the pigment responsible for the colour of hair, skin and eyes. A person with OCA1A has white hair, very pale skin and pink eye colour.
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