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IfallcellsinyourbodyhavethesameDNA,howcanyouhavedifferenttypesofcells
IfallcellsinyourbodyhavethesameDNA,howcanyouhavedifferenttypesofcells
3回答
2020-11-16 06:37
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梁睿超
Asweknown,allcellsinourbodyhavethesameDNA,however,eveniftheyhaveexactlythesameDNA,whyareeyesandlungssodifferent?TheanswerlieswithwhatDNAisandhowitworks.
Human'sDNAcontainsalloftheinformationneededformakingyou.Thisinformationisstoredintheover30,000humangenesfoundinalmostallyourcells.Therefore,togetattheinformation,agenemustbeturnedon(expressed)andtheinformationturnedintosomethinguseful,aprotein.Oncemade,thatproteingoesoutintothecellandperformssomesetofspecifictasks.Forexample,hemoglobin,aproteinfoundinredbloodcells,carriesoxygentocellsandcarbondioxideaway.
Foracelltowork,1000'softheseproteinsmustbemade,eachdoingitsparticularjob.Eyesandlungsaresodifferentbecausedifferentsetsofproteinsaremadeinthevariouseyeandlungcells.Inotherwords,intheeye,genesareturnedonforseeingandthe"breathing"genesareoff.Inlungcells,thesituationisreversed.
2020-11-16 06:39:45
陈卿
。。。大哥你写的太多了就给我2行写。。。
2020-11-16 06:44:30
梁睿超
AltoughallourbodycellscontainthesameDNA,human'sgeneswillexpressitindifferentwaysandthentheinformationfromtDNAcanbereleases.Aspecificproteinwillbemadeduringthisprocess,anditwillturnintodifferenttypesofcellsfortheirspecificfunctions.
2020-11-16 06:46:37