ADN nonsens

#1
lorddarph

Posted 24 July 2016 - 13:51

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https://ro.wikipedia.org/wiki/ADN

pagina wikipedia ne spune ca ADN este prescurtarea de la acidul dezoxiribonucleic (în engleză: deoxyribonucleic acid, DNA). Acesta este format din molecule organice dintre cele mai complexe. Substanța se găsește în fiecare celulă a ființelor vii și este esențială pentru identitatea oricărui organism
daca este esențială pentru identitatea oricărui organism inseamna ca orice organism este unic
daca orice organism este unic, de unde se gaseste aceasta sustanta in fiecare celula a fiintelor vii ?

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#2
Ann0nyym0us

Posted 24 July 2016 - 13:58

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Unic nu este acelasi lucru cu total diferit. Anumite secvente diferite din ADN ofera unicitate, nu este integral diferit de la o fiinta la alta.

Edited by Ann0nyym0us, 24 July 2016 - 13:59.

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#3
dani.user

Posted 24 July 2016 - 14:05

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Cum poti combina 26 litere sa formezi romane unice, asa poti combina 4 acizi obtinand lanturi ADN ... unice.

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#4
lorddarph

Posted 24 July 2016 - 14:12

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ce formula se utilizeaza ?
{\displaystyle C_{n}^{k}={\frac {n(n-1)\cdots (n-k+1)}{k(k-1)\cdots 1}},}

https://ro.wikipedia.../wiki/Combinare

sau

{\displaystyle A_{n}^{k}=n(n-1)\cdots (n-k+1)={\frac {n!}{(n-k)!}}.\!}

https://ro.wikipedia...wiki/Aranjament

in cazul nostru K-ul este 4 ?

Edited by lorddarph, 24 July 2016 - 14:16.

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#5
dani.user

Posted 24 July 2016 - 14:20

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Nici, nici. Ai 4 litere (A, C, G, T) si formezi cu ele siruri de miliarde de elemente.

a.png 1.28K 1 downloads posibile variante (in teorie, ca-n practica mai au diverse restrictii)

Edited by dani.user, 24 July 2016 - 14:25.

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#6
Ann0nyym0us

Posted 24 July 2016 - 14:20

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Nu e matematica, e biologie.

Quote

DNA is made of chemical building blocks called nucleotides. These building blocks are made of three parts: a phosphate group, a sugar group and one of four types of nitrogen bases. To form a strand of DNA, nucleotides are linked into chains, with the phosphate and sugar groups alternating.
The four types of nitrogen bases found in nucleotides are: adenine (A), thymine (T), guanine (G) and cytosine ©. The order, or sequence, of these bases determines what biological instructions are contained in a strand of DNA. For example, the sequence ATCGTT might instruct for blue eyes, while ATCGCT might instruct for brown.
The complete DNA instruction book, or genome, for a human contains about 3 billion bases and about 20,000 genes on 23 pairs of chromosomes.

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#7
lorddarph

Posted 24 July 2016 - 14:26

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dani.user, on 24 iulie 2016 - 14:20, said:

Nici, nici. Ai 4 litere (A, C, G, T) si formezi cu ele siruri de miliarde de elemente.

te rog, da-mi un exemplu despre cum ar trebui sa arate sirul de elemente formate din A C G T pentru elementul viata numarul 1 miliard !

Edited by lorddarph, 24 July 2016 - 14:26.

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#8
dani.user

Posted 24 July 2016 - 14:41

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Faci diferenta intre miliarde de elemente si "elementul viata numarul 1 miliard"? Incepe sa miroasa a trolling.

In rest, pentru exemple, gasesti pe net destule: http://www.bioinform...random_dna.html

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#9
pasilla

Posted 24 July 2016 - 14:43

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O mica parte ar arata cam asa:

cis1.png 615.47K 51 downloads

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#10
lorddarph

Posted 26 July 2016 - 19:09

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Daca as presupune ca ADN-ul primelor elemente viata ara arata asa
A, C, G, T
A, C, G, T
A, C, G, T
A, C, G, T
A, C, G, T
Toate arata la fel si nu stiu cate elemente viata au fost
Daca s-a produs o mutatie
A, C, G, T
A, C, G, T
A, C, G, T
A, C, G, T
A, C, T, G in loc de A, C, G, T
Iarasi nu stiu cate elemente viata au fost
Cum a supravietuit aceasta prima mutatie ?

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#11
Dany_Darke

Posted 26 July 2016 - 20:04

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diversitatea care o vezi peste tot, intr-un fel sau altul, pe langa evolutie, au fost mutatii genetice, de la astea, prin imperecheri cu gene fara mutatii, la un moment dat, gena predominanta a fost mai puternica, chiar daca asta presupunea ca fiind exact gena cu mutatii.

asa ca intrebarea ta este retorica

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ADN nonsens

#1 lorddarph Posted 24 July 2016 - 13:51

#2 Ann0nyym0us Posted 24 July 2016 - 13:58

#3 dani.user Posted 24 July 2016 - 14:05

#4 lorddarph Posted 24 July 2016 - 14:12

#5 dani.user Posted 24 July 2016 - 14:20

#6 Ann0nyym0us Posted 24 July 2016 - 14:20

#7 lorddarph Posted 24 July 2016 - 14:26

#8 dani.user Posted 24 July 2016 - 14:41

#9 pasilla Posted 24 July 2016 - 14:43

#10 lorddarph Posted 26 July 2016 - 19:09

#11 Dany_Darke Posted 26 July 2016 - 20:04

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#1
lorddarph

Posted 24 July 2016 - 13:51

#2
Ann0nyym0us

Posted 24 July 2016 - 13:58

#3
dani.user

Posted 24 July 2016 - 14:05

#4
lorddarph

Posted 24 July 2016 - 14:12

#5
dani.user

Posted 24 July 2016 - 14:20

#6
Ann0nyym0us

Posted 24 July 2016 - 14:20

#7
lorddarph

Posted 24 July 2016 - 14:26

#8
dani.user

Posted 24 July 2016 - 14:41

#9
pasilla

Posted 24 July 2016 - 14:43

#10
lorddarph

Posted 26 July 2016 - 19:09

#11
Dany_Darke

Posted 26 July 2016 - 20:04