Joe Jonas of the Jonas Brothers Band blames Justin Bieber's dad for his bad behavior.

Joe Jonas of the Jonas Brothers Band blames Justin Bieber’s dad for his bad behavior.

Joe Jonas knows how fame can screw with someone’s head, but he thinks there’s another reason for Justin Bieber’s bad behavior… his dad Jeremy Bieber. As the saying goes, Justin may be a chip off the old block.

“I think we all saw it coming. Your dad is your party animal, that’s going to sum it up pretty quick,” Jonas, 24, said in a new interview.

Jeremy Bieber, 39, abandoned Justin and his mother, Patricia “Pattie” Mallette not long after he was born and drifted in and out of his life while he was growing up, according to his mom’s tell-all book, “Nowhere But Up.”

She was 15 when she began a relationship with Jeremy Bieber, and was no saint herself. She left home a year later and supported herself through petty theft and drug dealing, according to her book.

She attempted suicide at 17 by throwing herself in front of a truck and spent time in a mental ward, she says in the book.

Her time in the hospital led her to embrace Christianity and when she got out she rekindled her relationship with Jeremy. Six months later, she was pregnant with Justin and moved to a home for unwed mothers.

Justin’s dad split when Justin was 10 months old. He married and had two children with his new wife.

Meanwhile, Mallette worked part-time and raised Justin on government assistance in low-income housing, according to the book.

When Justin became famous, Jeremy re-emerged in his life and the two rekindled their relationship. Now, Jeremy frequently parties with Justin. He was with him the night Justin was arrested in Florida for drunk driving and other charges.

“There’s an equation for some sort of explosion,” Jonas told Scene Magazine in the interview. “I’ve had an easier route than most. The youngster’s just turning 20; the Biebers of the world, are under a microscope,” he said.

Jonas is a former Disney channel star and was a member of The Jonas Brothers Band, until they broke up last October.

Meanwhile, Justin is still facing criminal charges in Florida.

In February, Jeremy split from his partner of seven years Erin Wagner to party with his son, London’s Daily Mail reported.

The couple is sharing custody of their two children Jaxon, 4, and Jazmyn, 5. But Wagner was reportedly fed up with Jeremy’s decision to be “Justin’s friend than a father figure,” according to the Daily Mail’s source.