Many mums and dads like to say what their children have got from them.

Whether it is their looks, skills, or intelligence, it can be a hotly-debated topic.

But there’s actually a science behind where kids get their brains from, reports the Mirror . And it’s sorry to the dads.

Multiple studies show that the X chromosome is responsible for carrying intelligence.

Women have two of these chromosomes (XX) and men have only one (XY) – so they are twice as likely to pass down intelligence to their children than the fathers are.

There have also been several studies that have sought to prove the theory over the years.

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One study at the Medical Research Council Social and Public Health Sciences Unit in Glasgow, revealed that kids’ IQs tend to be similar to their mothers’.

Researchers interviewed kids every year from the age of 14 to 22, taking into account various factors like education and socio-economic status.

They found that the best predictor of intelligence was their mothers – and the young people’s IQs were only around 15 points different.

But not all scientists agree on this basic X chromosome principle.

Other researchers have highlighted genetics are not the only factor in determining a child’s intelligence.

According to Psychology Spot , it’s estimated that 40 to 60% of intelligence is hereditary – the rest comes from our environment.

So mums and dads can both play an important role in their children’s emotional and intellectual development by building confidence, playing and teaching them new skills.

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