Prince Harry is rumored to not be the son of Prince Charles. Multiple sources have claimed that the Duke of Sussex is the son of Princess Diana’s lover, James Hewitt.

In recent years, Hewitt has denied fathering Prince Harry. He also said that Prince Harry had already been born when he started dating the Princess of Wales. However, this still hasn’t stopped royal watchers from thinking that the two men could be related to each other.

An expert said that all of the rumors and speculations may finally come to an end after Prince Harry and Meghan Markle’s baby is born. Spencer Stevenson, the founder of SpexHair.com, said that Baby Sussex — if it will be a boy — could inherit his dad’s male pattern baldness gene.

If the Duke and Duchess of Sussex’s child will have the MPB gene, this could prove that Prince Harry is really related to Prince Charles because he also started losing his hair at an early age. Hewitt, on the other hand, still has thick hair despite already being 60 years old.

“The combination of gene pools is always a lottery and impossible to say who the baby will most look like,” Stevenson told Daily Star. “Boys tend to look more like their fathers and daughters their mothers. To inherit the MPB gene essentially is a genetic lottery for the male and one of the most common myths is that a man inherits the genetic propensity for MPB from his mother,” he added.

Stevenson said that the primary baldness gene is on the X or female chromosome, which men usually inherit from their mothers. But the gene for MPB is actually passed down from both sides of the family, and it is currently present in Prince Harry’s side of the family and not Meghan’s.

“Furthermore, baldness genes may skip generations and skip people within the same generation (not the case with the royal family). This is why it is perfectly possible to have an older brother with enviable full, think hair, while you are stuck with a Norwood 4 at age 25,” he said.

Prince Harry and Meghan Markle Prince Harry, Duke of Sussex, and Meghan, Duchess of Sussex, walk through the walled public Andalusian Gardens. Facundo Arrizabalaga - Pool/Getty Images