Brazilian jiu jitsu -- or BJJ -- and wrestling are combat sports. Both are styles of grappling. Beyond that, the differences between the two are more numerous than the similarities. Neither is necessarily better or worse than the other, but the particulars of one or the other might be a better match for your interests and preferences.
How long does DNA testing take depends on the place where the test takes place. Some may even give the results in 3 working days while others may take duration of 10 days. Before a DNA testing is done, there are many clauses put forth; the most important one being the agreement of all to get the test done.
Rapid testing at a community health center or clinic usually requires blood (either drawn by puncturing a vein or from a finger prick) or saliva (i.e., from an oral swab). Results can take anywhere from 2 to 40 minutes but generally take 10 to 20 minutes. Laboratory-based tests use methods that are more accurate, but may also take longer (generally 30 minutes to more than 3 hours). This makes laboratory-based testing well suited for confirming the results of a rapid or at home test.