The color of the eyes, that of the hair or the shape of the face are hereditary characteristics but others are not, such as fingerprints for example. Enter the fascinating world of genetics.
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Some characters physical, morphological or even less visible are hereditary, that is to say they are inherited from our parents, thanks to Genoa that they transmitted to us.
Hereditary traits
This is the case of :
Hereditary traits influenced by the environment
Other traits are dictated by genes, but are also more or less influenced by the environment:
- the morphology : if genes have a lot to do with it, food can affect growth and therefore the final size, but also the weight;
- diseases: risk factors for Cancer (mutation of a gene in the case of breast cancer), etc.
Non-hereditary traits
Other traits are not hereditary, but rather related to lifestyle or environment. They can therefore evolve over time and, for example, differ between two identical twins who nevertheless have the same genes:
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