Video: Vim li cas DNA thiaj li tseem ceeb hauv kev tshawb fawb forensic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Forensics thiab DNA
DNA tau notably tseem ceeb mus rau teb ntawm forensic science . Lub discovery ntawm DNA tau txhais hais tias kev txhaum lossis kev txhaum ntawm tus neeg raug soj ntsuam txog kev ua txhaum cai tuaj yeem txiav txim siab. Nws kuj txhais tau hais tias cov pov thawj tsis tshua muaj peev xwm tseem tuaj yeem muab cov ntsiab lus tseem ceeb hais txog tus neeg ua txhaum cai
Raws li txoj cai, vim li cas DNA thiaj li muaj txiaj ntsig hauv kev tshawb fawb forensic?
DNA Profileing yog ib forensic cov txheej txheem hauv kev tshawb nrhiav kev ua txhaum cai, sib piv cov neeg raug liam txhaum cai 'cov ntaub ntawv rau DNA pov thawj thiaj li ntsuas qhov muaj feem ntawm lawv txoj kev koom tes hauv kev ua txhaum cai. Nws kuj yog siv nyob rau hauv kev ntsuam xyuas niam txiv, tsim kom muaj kev tsim nyog nkag teb chaws, thiab hauv kev tshawb nrhiav caj ces thiab kev kho mob.
DNA databases siv los ntawm forensic scientists li cas? Cov DNA typing method tam sim no siv yog STR typing. Los ntawm kev khaws cia DNA cov ntaub ntawv hauv computer data bank, DNA kev tsom xam tuaj yeem yog siv los daws cov teeb meem txhaum cai tsis muaj neeg raug liam. Cov kws tshawb fawb forensic tuaj yeem sib piv DNA cov ntaub ntawv pov thawj ntawm cov ntaub ntawv pov thawj lom neeg nrog lub txhab nyiaj cov ntaub ntawv los pab tub ceev xwm hauv kev tshawb nrhiav cov neeg raug liam.
Ib yam li ntawd, nws raug nug, vim li cas DNA thiaj suav tias yog qhov tseem ceeb?
DNA yog tseem ceeb rau tag nrho cov muaj sia nyob - txawm nroj tsuag. Nws yog tseem ceeb rau qhov qub txeeg qub teg, coding rau cov proteins thiab cov kev qhia genetic qhia rau lub neej thiab nws cov txheej txheem. DNA tuav cov lus qhia rau lub cev los yog txhua lub cell txoj kev loj hlob thiab kev tsim tawm thiab thaum kawg tuag.
Cov noob caj noob ces siv li cas hauv kev tshawb fawb forensic?
Forensic caj ces Cov txheej txheem qee zaum siv rau DNA kuaj los ntawm cov tsiaj tsis yog tib neeg, nroj tsuag, thiab kab mob. Forensic Kev ntsuam xyuas DNA kuj tau tsim los txheeb xyuas qhov chaw ntawm cov qauv cannabis, thiab kev txheeb xyuas cov kab mob tshwj xeeb ntawm moss tseem tau ua. siv ua pov thawj nyob rau hauv ib tug neeg tua neeg.
Pom zoo:
Vim li cas thiaj tseem ceeb rau cov kws tshawb fawb nrhiav txoj hauv kev los npaj cov ntsiab lus?
Inventor: Dmitri Mendeleev
Vim li cas qhov tseeb thiab qhov tseeb yog qhov tseem ceeb hauv kev tshawb fawb?
Qhov tseeb sawv cev rau qhov kev ntsuas ze npaum li cas los ntawm nws qhov tseeb. Qhov no yog qhov tseem ceeb vim tias cov cuab yeej tsis zoo, cov ntaub ntawv ua haujlwm tsis zoo lossis tib neeg yuam kev tuaj yeem ua rau cov txiaj ntsig tsis raug uas tsis ze rau qhov tseeb. Precision yog qhov ze npaum li cas ntawm cov kev ntsuas ntawm tib yam yog rau ib leeg
Vim li cas nws tseem ceeb uas peb txoj kev nkag siab txog kev tshawb fawb txog kev sib raug zoo txuas ntxiv mus?
Kev nthuav dav thiab kev loj hlob ntawm kev tshawb fawb txog kev sib raug zoo yog qhov tsim nyog vim nws pab txhawb koj txoj kev sib raug zoo thiab kev sib raug zoo nrog cov neeg hauv zej zog. Thaum koj nyob nrog cov neeg koj yuav tsum nkag siab lawv thiab social science pab koj ua li ntawd
Vim li cas cov nuj nqis tseem ceeb tseem ceeb thaum qhia txog kev ntsuas?
Cov duab tseem ceeb yog qhov tseem ceeb los qhia qhov tseeb ntawm koj cov lus teb. Qhov no yog qhov tseem ceeb hauv kev tshawb fawb thiab engineering vim tias tsis muaj cov cuab yeej ntsuas tuaj yeem ua qhov ntsuas nrog 100% precision. Siv cov nuj nqis tseem ceeb tso cai rau tus kws tshawb fawb paub tias cov lus teb meej npaum li cas, lossis qhov tsis paub meej npaum li cas
Vim li cas kev ntsuas thiab ntsuas qhov tseem ceeb hauv kev tshawb fawb txog kev lag luam?
Cov nplai tau siv ntau zaus hauv kev tshawb fawb kev lag luam vim tias lawv pab hloov cov ntaub ntawv zoo (xav, kev xav, kev xav) rau hauv cov ntaub ntawv ntau, cov lej uas tuaj yeem txheeb xyuas tau. Koj tsim ib qho kev ntsuas los ntawm kev muab cov khoom (yuav ua tau piav qhia) rau tus lej