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And some people even have eyes that are each a different colour. Yes! Your eyes can contain more than one colour. As a result, two blue-eyed parents might have a child with brown eyes!Ĭan your eyes have two different colours? However, scientists now understand that genes can react in unique and surprising ways. For example, it was once believed that two people with blue eyes would always have children with blue eyes. People used to think that you could predict a person’s eye colour just by looking at the colours of their parents' eyes. Why are my parents' eyes a different colour than mine? These genes combine in a number of different ways to produce eye colour. Some genes are dominant - that means you're more likely to inherit these traits - and some are recessive - that means you're less likely to inherit these traits. Everyone inherits genes - parts of the DNA that carry the information that determines which traits are passed on from parents to children, traits like eye colour, hair colour and height. How much melanin is in your eyes is determined by genetics.
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As a result, they have very light (sometimes red or grey eyes) and very pale skin.ĭNA strands, which are made up of genes, determine everything about you - from your eye colour to your height. People with albinism have a hard time producing melanin. Just like with your eyes, the more melanin in your skin, the darker it is. People with dark brown eyes have more melanin than people with light blue eyes. The amount of melanin in your eyes determines how light or dark they are. Melanin is a pigment that’s found in human bodies. (Photo credit: angs school on / CC BY-NC-ND) Those with albinism have a hard time producing melanin and can sometimes have red eyes. The amount of melanin in your eye determines how light or dark they are. That exception is red eyes, which only people with a medical condition known as albinism have. Green is the least common colour, with one exception. Brown eyes are the darkest and also the most common. Irises can be different shades in a number of different colours - red, grey, blue, green, amber, hazel and brown. The black dot in the centre is called the pupil, and the coloured part that surrounds it is the iris. The human eye is made up of a few different parts. But have you ever wondered why your eyes are one colour, while your parents' are a completely different colour? For everything you’ve wanted to know about eye colour, read on! Eyes come in a beautiful rainbow of colours, from bright blue to deep dark brown.