Question

If heritability is how much the differences among people are due to genetics, what percent would apply to identical twins? (Psychology)

Answer 1

If you mean how similar identical twin DNA is they share 100% of the same DNA. If this isn’t what you meant... awkward ‍♀️

Answer 2

The percentage of genetic inheritance of identical twins is always 100%.

Identical twins occurs when a single fertilised egg divides into 2 leading to the formation of of two zygotes that are genetically identical.

Because they are produced from the same fertilized egg, it is the reason why identical twins have 100% genetic make up.

Having a 100% genetic make up means that

• They have the same eye colour

• They have the same hair colour

• They are always of the same sex( that is either male or female)

• They have the same skin colour.

Therefore identical twins have 100% the same genetic information.

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