Is the blues rock and roll or did rock and roll come from the blues?

Does B.B. King fall in the genre rock n roll (james brown)Is the blues rock and roll or did rock and roll come from the blues?
Rock and Roll developed from Blues.

Probably you can read all about it on Wikipedia, but, if you're truly interested, I recommend you get some old blues records from the 20s and then 30s and 40s so you can listen to the progression yourself until the 50s when rock and roll was born.Is the blues rock and roll or did rock and roll come from the blues?
Rock cam e form the blues



the blues go back to about the 1910'sIs the blues rock and roll or did rock and roll come from the blues?
muddy waters, "the blues had a baby, and they named it rock and roll"