I suspect Justin Bieber was no clean-handed when I saw him for the first sentence on television .
It wasTMZ , and he must have been 15 at the time . He was being tail by camera operator who were ask really smart question like : “ What ’s the best matter about being Justin Bieber ? ” The tween heartthrob replied : “ The girls , ” like passing soberly . It gave me shivers .
So when 20 - year - older Mariah Yeatersaid The Bieb was her babe pappa , my ears perked up . She ’s got Justin and his attorney ’s attention , too . He has concord to undergo DNA examination , which will out the deceiver in this report : People might lie , but DNA does n’t .

Unless someone mixes up the test tube , a deoxyribonucleic acid test is middling much guarantee to tell you just who fathered a small fry , concede you ’ve obtained a number of spit or blood from everyone involved . desoxyribonucleic acid fatherhood examination became uncommitted in 1988 . Before that paternity was more suggested than proven using blood type ( fatherhood could be shut out but not proven ) . It arrest a small more accurate in the ’ 70s and ’ eighty withelectrophoresis , which could identify certain genetic marker , but not down to the alphabetic character like DNA testing can today .
If the paternity case is bastard , here ’s why Mariah Yeater is not , perhaps , the sharpest pecker in the shed ( besides that fact that she will have instigated her ownstatutory rapeinvestigation ) . And if it is rightful , this is why The Biebs is F’d in more ways than one .
1 . Pay for it

Mail rules of order habitation testscost as short as $ 79,otherscan cost between $ 400 and $ 2000 , depending on how complicated the test is ( Are you testing one or more minor ? Are you also screen for motherhood ? How fast do you need it ? ) . There ’s some controversy over whether the home tests are as upright as the in - soul ones . We suggest you check that the test is submissible in courtyard if that ’s what you necessitate .
2 . Get it
Paternity tests these solar day typically apply a simple swob from inside the impudence of the likely phratry penis : daddy , mommy , baby . Spit contains plenty of DNA , since a full accompaniment of your genetic info is present in every cadre in your soundbox . Or they might sometimes use line of descent . you may go to a laboratory or chain armour - ordering your test — more on that below . If you ’re in more of a hurry , you’re able to test for paternity after the first trimester of gestation withamniocentesisor a technique calledchorionic villus sampling .

3 . Got it
Each parent chip in half the DNA—23 chromosomes each — to their offspring ’s genetic make up . DNA is made of the nucleic acids adenine , T , cytosine and guanine represent by the letter A , T , C and G. They travel in pairs ( A bind with T and C binds with G ) , and together they create that treble spiral swirl you see in the media pretty much any time DNA is discussed .
4 . study it

Scientists record the story these letter tell usingtechnologysuch as a polymerase chain reaction , or PCR , which hyperbolize the desoxyribonucleic acid into an amount they can more easily canvas . Then they await at the father ’s contribution to the babys genetics , but they do n’t study his entire genome . That would take too long and be right smart expensive . Instead , scientists choose DNA marker , commonly around 16 of them , then compare those markers to the baby ’s DNA .
5 . Keep track of it
To foreclose trial run - tube mixture - ups , technician break the DNA sample in two and mark off each one against the other throughout the analysis process .

6 . substantiate it
DNA authorship test are very exact ( about 99.9 percent ) . They ’re so accurate that they can even limit authorship by testing DNA from grandparent and full cousin , and even using saliva left on a imbibition crank .
Not all tests are create equal , at least in the eyes of the law . Some are court - approve while others , often the at - home , mail - in kind , are mostly used for repose of mind — or when deciding to move ahead with a causa . We ’re guessing Biebs et . al . will be bound for the former .

[ Nature , DNA Diagnostics Center ; effigy : Shutterstock / Alila Sao Mai , Associated Press ]
Justin Bieber
Daily Newsletter
Get the best technical school , science , and culture tidings in your inbox daily .
News from the future , delivered to your nowadays .
You May Also Like








![]()
