Page 11 - Botany

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 ivB‡evR my¨Mvi t GwU †c‡›UvR my¨Mvi|
 A‰Re dm‡dU t dm‡dvwiK A¨vwmW|
 bvB‡Uªv‡Rb †em ev ¶viK t A¨v‡Wwbb, Myqvwbb, mvB‡Uvwmb Ges BDivwmj|

RNA i KvR t
 Ab¨Zg cÖavb KvR n‡jv †cÖvwUb ms‡køl Kiv |
 mRNA DNA †_‡K evZ©v wb‡q ivB‡ev‡mv‡g cvVvq|
 rRNA ivB‡evwbDwK¬I-†cÖvwUb ˆZwi K‡i|

 tRNA A¨vwg‡bv A¨vwmW ¯’vbvšÍi K‡i|

msÁv wjL- wbDwK¬K A¨vwmW t wbDwK¬K A¨vwmW n‡jv AmsL¨ bvB‡Uªv‡Rb ¶viK, †c‡›UvR ï¨Mvi I dm‡dvwiK A¨vwmW mgš^‡q
MwVZ hv Rx‡ei eskMwZi avivmn mKj KvR wbqš¿Y K‡i|

cv_©K¨ t DNA I RNA Gi g‡a¨ cv_©K¨ Ñ
‰ewkó¨ DNA RNA
Ae¯’vb mvaviYZ †µv‡gv‡Rv‡g cvIqv hvq, KLbI ev mvB‡UvcøvRg, †µv‡gv‡Rv‡g I ivB‡ev‡Rv‡g cvIqv
gvB‡UªvKwÛªqv ev †K¬v‡ivcøv‡÷ cvIqv hvq| hvq|
‡fŠZ MVb wØm~ÎK, Nyiv‡bv wmuwoi gZ| GKm~ÎK, wkK‡ji b¨vq|
ivmvqwmK i) G‡Z wWAw·ivB‡evR my¨Mvi _v‡K| i) G‡Z ivB‡evR my¨Mvi _v‡K|
MVb ii) DNA Gi cvBwiwgwW‡b mvB‡Uvwmb I _vBwgb †em ii) RNA Gi cvBwiwgwW‡b mvB‡Uvwmb I BDivwmj †em

wn‡m‡e _v‡K| wn‡m‡e _v‡K|
DrcwË Abywjc‡bi gva¨‡g bZzb DNA m„wó nq| G‡`i †Kvb Abywjcb nq bv, bZzbfv‡e RNA m„wó nq
cªKvi‡f` DNA AYyi †Kvb cÖKvi‡f` †bB| Kvh©MZ w`K n‡Z RNA wZb cÖKviÑ mRNA,

t RNA, r RNA
cÖavb KvR eskMwZi aviK, evnK I wbqš¿K wn‡m‡e KvR K‡i| ‡cÖvwUb ms‡kølY K‡i|

14| RNA i cÖKvi‡f` t wb‡gœ wewfbœ ai‡bi RNA m¤ú‡K© eY©bv Kiv n‡jv Ñ
1. evZ©ven RNA (mRNA ev Messenger RNA) t GKwU †Kv‡li †gvU RNA i 5% n‡Z 10% n‡jv mRNA|
DNA AYyi KvQ †_‡K evZ©v msMÖn K‡i †cÖvwUb ms‡køl‡Yi QuvP wn‡m‡e Kvh©Kix nq| G ai‡bi RNA AYyi Ae¯’vb
†Kv‡li mvB‡UvcøvR‡g| Giv AZ¨šÍ ¶Y¯’vqx| evZ©ven RNA AYyi IRb 5-20 j¶ WvjUb|

2. UªvÝdvi RNA (tRNA) t †hme RNA †Kv‡li wbDwK¬qvm ev mvB‡UvcøvRg †_‡K
A¨vwg‡bv A¨vwmW‡K a‡i †cÖvwUb ms‡kølY ¯’vb ivB‡ev‡mv‡g wb‡q hvq Zv‡`i tRNA
e‡j| GwU GKwU ¶z`ª cÖK…wZi RNA | G‡Z 75 †_‡K 90 wU wbDwK¬IUvBW AYy
_v‡K| G‡`i cwigvY †gvU RNA i 10-15%| R. Holley (1965) Ges Zvi

mnKgx©iv tRNA Gi MV‡bi †K¬vfvi wjf (Clover leaf ) g‡Wj cÖYqb K‡ib|
GB g‡Wj Abyhvqx tRNA ‡Z cvuPwU evû _v‡K| evû¸‡jv n‡jv A¨vwg‡bv GwmW
evû, T evû, A¨vw›U‡KvWb evû, D evû Ges AwZwi³ evû|
3. ivB‡ev‡mvgvj RNA (rRNA) t †Kvb ‡Kv‡li mgy`q RNA AYyi 80-90 fvM rRNA | †Kv‡li ivB‡ev‡mv‡g G‡`i

Ae¯’vb| Giv me©v‡c¶v ¯’vqx Ges A`ªeYxq | Giv g~jZ ‡cÖvwU‡bi mv‡_ hy³ n‡q ivB‡evwbDwK¬I-†cÖvwUb KYv MVb K‡i|
4. gRNA t †hme RNA wKQz fvBivm‡`‡n eskMwZ Dcv`vb wn‡m‡e KvR K‡i, †m¸‡jv‡K †R‡bwUK RNA e‡j| †cÖvwUb
ˆZwi I we‡kl †¶‡Î eskMwZi e¯‘ wn‡m‡e KvR K‡i|

mbRq P›`ª gÛj, mnKvwi Aa¨vcK, Dw™¢` weÁvb wefvM, RqcyinvU miKvwi K‡jR, RqcyinvU| sanjoymondal1980@gmail.com Mob- 01713747235 11