Text 2 It is a wise father that knows his own child, but today a man can boost his pater

Text2Itisawisefatherthatknowshisownchild,buttodayamancanboosthispaternal(fatherly)wisdom–oratleastconfirmthathe’sthekid’sdad.Allheneedstodoisshellour$30forpaternitytestingkit(PTK)athislocaldrugstore–andanother$120togettheresults.

Morethan60,000peoplehavepurchasedthePTKssincetheyfirstbecomeavailablewithoutprescriptionslastyears,accordingtoDougFog,chiefoperatingofficerofIdentigene,whichmakestheover-the-counterkits.MorethantwodozencompaniessellDNAtestsDirectlytothepublic,ranginginpricefromafewhundreddollarstomorethan$2500.

Amongthemostpopular:paternityandkinshiptesting,whichadoptedchildrencanusetofindtheirbiologicalrelativesandlatestr ageamanypassionategenealogists-andsupportsbusinessesthatoffertosearchforafamily’sgeographicroots.

Mosttestsrequirecollectingcellsbywebbingsalivainthemouthandsendingittothecompanyfortesting.AlltestsrequireapotentialcandidatewithwhomtocompareDNA.

Butsomeobserversareskeptical,“Thereisakindoffalseprecisionbeinghawkedbypeopleclaimingtheyaredoingancestr ytesting,”saysTreyDuster,aNewYorkUniversitysociologist.Henotesthateachindividualhasmanyancestors-numberinginthehundredsjustafewcenturiesback.Yetmostancestr ytestingonlyconsidersasinglelineage,eithertheYchromosomeinheritedthroughmeninafather’slineormitochondrialDNA,whichapasseddownonlyfrommothers.ThisDNAcanrevealgeneticinformationaboutonlyoneortwoancestors,eventhough,forexample,justthreegenerationsbackpeoplealsohavesixothergreat-grandparentsor,fourgenerationsback,14othergreat-great-grandparents.

Criticsalsoarguethatcommercialgenetictestingisonlyasgoodasthereferencecollectionstowhichasampleiscompared.Databasesusedbysomecompaniesdon’tr elyondatacollectedsystematicallybutr atherlumptogetherinformationfromdifferentr esearchprojects.ThismeansthataDNAdatabasemaydifferdependingonthecompanythatprocessestheresults.Inaddition,thecomputerprogramsacompanyusestoestimaterelationshipsmaybepatentedandnotsubjecttopeerrevieworoutsideevaluation.

26.Inparagraphs1and2,thetextshowsPTK’s___________.

[A]easyavailability

[B]flexibilityinpricing

[C]successfulpromotion

[D]popularitywithhouseholds