Ụdị mkpụrụ ndụ ihe nketa ụwa

Mkpụrụ ndụ ihe nketa koodu - bụ a pụrụ iche izo ya ezo butere n'aka ozi iji irighiri nke nucleic asịd. Dabere na nke a nzobe ọmụma mkpụrụ ndụ ihe nketa kwesịrịnụ achịkwa njikọ nke na-edozi na enzymes na ahụ, si otú akọwapụta metabolism. N'aka nke ya, ọdịdị nke protein na onye ọ bụla na-arụ ọrụ ya kpebiri site na ọnọdụ na ngwakọ nke amino acids - akụkụ nke usoro protein mole.

Ke n'etiti ikpeazụ nke narị afọ na ọ e kwuru na mkpụrụ ndụ ihe nketa, nke dị iche iche akụkụ nke deoxyribonucleic acid (abbreviated - DNA). Nucleotides njikọ n'ụdị nke DNA ụmụ irighiri ihe e ji mara abụọ Strand, anakọtara n'ụdị a gburugburu.

Ndị ọkà mmụta sayensị achọpụtala njikọ dị n'etiti mkpụrụ ndụ ihe nketa na usoro ihe ọkụkụ nke protein nke onye ọ bụla, ihe kachasị mkpa bụ na usoro nhazi nke ndokwa amino acids n'ime mkpụrụ ndụ protein na-adaba n'usoro nke nucleotides na mkpụrụ ndụ. N'ịbụ ndị guzobere njikọ a, ndị ọkà mmụta sayensị kpebiri ịkọpụta mkpụrụ ndụ mkpụrụ ndụ ihe nketa, ya bụ. Debe iwu nke mmekorita nke iwu nke nucleotides na DNA na amino acids na protein.

E nwere nanị ihe anọ dị iche iche nke nucleotides:

1) A - adenyl;

2) Г - guanyl;

3) T - thymidyl;

4) C - cytidyl.

Ngwakọta nke ndị na-edozi na-agụnye ụdị iri abụọ nke amino acid. Site n'ịkọpụta mkpụrụ ndụ mkpụrụ ndụ ihe nketa, nsogbu malitere, ebe ọ bụ na nucleotides dị ntakịrị karịa amino acid. Mgbe ị na-edozi nsogbu a, a na-atụ aro na amino acids na-ejikọta ya site na njikọ dị iche iche nke atọ nucleotides (nke a na-akpọ codon ma ọ bụ triplet).

Ọ bụrụ na anyị gụọ ọnụọgụ niile, mgbe ahụ, atọ ga-adị 64, ya bụ, ugboro atọ karia amino acids - a ga - enweta ihe karịrị atọ.

Tụkwasị na nke ahụ, ọ dị mkpa iji kọwaa otú okpukpu atọ dị na mkpụrụ ndụ dị. Ya mere enwere ato ato n'iche echiche:

1) ugboro atọ na-eso otu mgbe ndị ọzọ na-aga n'ihu, ya bụ. Debe otu koodu siri ike;

2) a na-eme ndokwa atọ na ntụgharị nke "ebe na-enweghị isi," ya bụ. A na-akpọ "commas" na "paragraf" na koodu;

3) ugboro atọ nwere ike ịghachite, i. E. Njedebe nke atọ triplet nwere ike ịmalite mmalite nke ọzọ.

Na oge ugbu a, a na-ejikarị usoro nkwupụta nke koodu ahụ eme ihe.

Ihe mkpụrụ ndụ mkpụrụ ndụ na ihe onwunwe ya

1) Code triplet - o gunyere mmekorita onweghi nke nucleotides atọ nke na-eme codons.

2) mkpụrụ ndụ ihe nketa koodu bụ ejighi oru - ya bụ na ya pụta nke ya triplet. Otutu amino acid nwere ike igbanwe ya site na otutu codons, ebe codons, dika ntule na mwepia, bu okpukpu ato karia amino acids. Ụfọdụ codons na-arụ ụfọdụ ọrụ nkwụsị: ụfọdụ nwere ike "kwụsị nrịbama" nke na-eme atụmatụ njedebe nke mmepụta nke ígwè amino acid, ebe ndị ọzọ nwere ike ịpụta mmalite nke ọgụgụ koodu.

3) Usoro mkpụrụ ndụ mkpụrụ ndụ bụ ihe pụrụ iche - nanị otu amino acid nwere ike ịdekọ na codons ọ bụla.

4) Usoro okike nwere nkwekọrịta, ya bụ. Usoro nke nucleotides na usoro nke amino acids na-edekọ onwe ha.

5) A na-edepụta koodu ahụ mgbe nile ma dị nkenke, ọ dịghị "nucleotides" na-abaghị uru na ya. Ọ na-amalite site na otu triplet, nke a na-anọchi ya na-esoteghị nkwụsịtụ ma jiri okwu codon kwụsị.

6) Usoro mkpụrụ ndụ ihe nketa nwere usoro nke ụwa - mkpụrụ ndụ nke mkpụrụ ndụ ọ bụla na-etinye ihe ọmụma banyere ndị na-edozi ahụ n'otu ụzọ ahụ. Ọ dabere na ọkwa nke mgbagwoju anya nke nzukọ nke akụkụ ahụ ma ọ bụ ọnọdụ ya.

Nkà mmụta sayensị nke oge a na-atụ aro na mkpụrụ ndụ mkpụrụ ndụ na-ebili ozugbo mgbe a na-amụpụta akụkụ anụ ahụ site n'ọkpụkpụ. Mgbanwe mgbanwe na usoro evolushọn na-eme ka o kwe omume ọ bụla koodu nhọrọ, i.e. Amino acids nwere ike megharia na usoro ọ bụla. Ntak emi ụdị koodu a na-adịgide ndụ n'oge mmalite, gịnị mere koodu ahụ ji dị n'ụwa ma nwee usoro yiri nke ahụ? Ihe omumu ndi sayensi achota banyere onodu ogugu ndi mmadu, ihe omimi di iche iche bilitere.