Yes. Both Goku and Raditz are bothers and son of Bardock. Just Turles, even looking just like Goku just not related.
I SWEAR TO GOD.DO HALF OF YOU EVEN WATCH THE SHOW OR READ THE MANGA BEFORE ASKING THESE STUPID QUESTIONS? YES.HE IS.HE SAID IT.LIKE.....20 TIMES.....WATCH BEFORE ASKING DUMB QUESTIONS