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Rae<3Rae

  • 2 years ago

1. What does it mean when scientists say that living organisms share a universal genetic code?

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  1. rahulchatterjee
    • 2 years ago
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    universal genetic code means the code is responsible for synthesis of the same protien in every organism.

  2. Rae<3Rae
    • 2 years ago
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    thank you i have been looking everywhere and i cant find it

  3. Australopithecus
    • 2 years ago
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    @rahulchatterjee No that is wrong! When scientists say they share a universal genetic code it means that all organisms it can mean either: -DNA as the main source of hereditary information in all life forms we know of or more likely that all organisms we know of use a three base pair code for the synthesis of proteins, DNA produces mRNA this mRNA is read three base pairs at a time by a ribosome, this is called the genetic code. Here is the genetic code, each three letter code represents three nucleotide bases and each three letter codes for an amino acid, note there is redundancy in the code. http://www.mun.ca/biology/scarr/MGA2-03-28.jpg Please be aware that this code is not really universal as we have discovered organisms that deviate from this code. For example an organism might see UUU and read that as a Leucine instead of a proline. So the code isn't really universal. Also please be aware of the fact that only a small portion of DNA actually codes for proteins and also proteins are not the only product DNA produces, it also produces many types of RNA that doesn't code for protein that serve various functions inside the cell for example: snRNA and tRNA, rRNA

  4. Australopithecus
    • 2 years ago
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    It makes me sad that 2 people gave him medals

  5. rahulchatterjee
    • 2 years ago
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    ya . i know there r some exception.. but how am i wrong?? :(

  6. rahulchatterjee
    • 2 years ago
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    @heena .. plz help

  7. heena
    • 2 years ago
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    no universal genetic code means same as said by rahul example AUG in every oragnism it will be called methionine and yea ther is exception too like serine etc but universal means that it will remain same for example if it code AUG whether it is find in any organism it will called methionine

  8. Australopithecus
    • 2 years ago
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    @heena the way it is worded makes it incorrect he may be close to the right answer but it is still wrong. The genetic code is the way the cells determine the amino acid sequences of proteins coded in mRNA which is in turn coded in our DNA. It isn't solely responsible for synthesis of proteins and he made no mention of the three nucleotide code.

  9. Australopithecus
    • 2 years ago
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    I know you were on the right track but the way you answered was ambiguous and misleading

  10. Australopithecus
    • 2 years ago
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    Not that I'm trying to discourage you, I just ask that you make an effort to be more clear and thorough in your answers as you may end up spreading misinformation or giving people the wrong impression which is harmful

  11. heena
    • 2 years ago
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    no no no prob but nw my qn to u wat u mean by universal genetic code as in reference u were answering is not of universal gentic code i m not sayin wat u said is wrong but here there is no sense to say that mean not the correct thing its a realtion og genetic code u are telling ..

  12. heena
    • 2 years ago
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    as i agree spreadin misleading information is vharmful but as far i remember i studied this thing abu universal genetic code and wat u saying i studed that too but in genetic code ...

  13. Australopithecus
    • 2 years ago
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    the universal genetic code is simply a three nucleotide code found in DNA that codes for proteins. Each three nucleotide code represents an amino acid, this is universal because all cells use the three nucleotide code to synthesis their proteins but it is also not universal because the code doesn't always carry over to other cells. For example what is methionine in once cell might not be the same three nucleotide code in for methionine in another cell.

  14. Australopithecus
    • 2 years ago
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    Remember that DNA is a template for mRNA so the code transfers over to mRNA except thymine is replaced with uridine

  15. Australopithecus
    • 2 years ago
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    so when you see the code UUU that stands for Uridine Uridine Uridine It would thus be AAA TTT in DNA unless some post transcriptional modification occurred of course

  16. Australopithecus
    • 2 years ago
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    but I have over explained this lol

  17. heena
    • 2 years ago
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    yup uuu uridine but dont u think universal genetic code dont mean this its nitrogen base which is called nucleotide and as i said its abu genetic code and universal genetic code is a theory which was xplained by me and rahul above

  18. heena
    • 2 years ago
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    nirtogen base +sugar +phosphate group =nucleotides right and wat u were saying is abu neculeotide and trancription to form rtna and den translation to form protein

  19. Australopithecus
    • 2 years ago
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    I refute that it anything of use was explained by rahulchatterjee his answer was ambiogous and missleading when refering to genetic code we are not talking about DNA we are talking about the three nucleotide alphabet https://en.wikipedia.org/wiki/Genetic_code

  20. Australopithecus
    • 2 years ago
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    If it was talking about sharing of a universal molecule of heredity then the answer would be DNA but this is referring specifically to a theory

  21. heena
    • 2 years ago
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    yes xactly and here we are talking abu universal genetic code not genetic code... both are different things

  22. Australopithecus
    • 2 years ago
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    but not really

  23. heena
    • 2 years ago
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    u are realting universal genetic code with genetic code..

  24. Australopithecus
    • 2 years ago
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    they often say it is universal when it isn't

  25. heena
    • 2 years ago
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    genetic code xmaplin wat it is like u said but universal geentric code says that any nucleotide whether found in any organism it it codes AUG it will surely form methionine

  26. heena
    • 2 years ago
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    *xplain=xmaplin

  27. heena
    • 2 years ago
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    @blues help plzz

  28. Australopithecus
    • 2 years ago
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    What are we even arguing about I addressed the issue of it not being the same in every organism, never the less we have yet to find an organism that doesn't utilize a three nucleotide alphabet for its protein coding

  29. heena
    • 2 years ago
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    yea and i said it it codes AUG it wills surely form mehtionine if it has two nucleotide there will be no coding like AUG and u ll not found methionine there

  30. Australopithecus
    • 2 years ago
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    What are you even arguing that post transcriptional modification occurs or that there are start and stop codons because that is all in the theory and I didn't feel it necessary to go into that much detail

  31. heena
    • 2 years ago
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    yea and still i m saying ur ans is not wrong but u are telling about genetic code not universal genetic code as i said again i m repeating universal mean the code find in any orgnism codes the same code xample GUG it always code methionine if it is find in any organism ok

  32. Australopithecus
    • 2 years ago
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    yeah I probably should have differentiated between the two

  33. Australopithecus
    • 2 years ago
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    i have been up since 5pm yesterday so cut me some slack

  34. heena
    • 2 years ago
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    np anyways the link u posted have some good info which will help me thnx :

  35. blues
    • 2 years ago
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    The "Universal Genetic Code" and "Genetic Code" are for practical purposes the same thing. Not the same thing when microbiologists get together over pizza and popcorn at conferences, but then microbiologists don't get much. As @Australopithecus correctly says, it refers the three letter codons which make specific amino acids. The point is that this coding alphabet is pretty much the same in all organisms. Which suggested that this system evolved just once and all living organisms with it today are descended from that first organism. I'm not sure why this is causing so much trouble...?

  36. blues
    • 2 years ago
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    *microbiologists don't get out much.

  37. Australopithecus
    • 2 years ago
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    it isn't causing any trouble lol I was just having a hard time understanding Heena in my lack of sleep induced high

  38. heena
    • 2 years ago
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    http://learn.genetics.utah.edu/content/begin/dna/transcribe/rna-genetic-code.swf xample of universal genetic code and it states that in the wholeuniverse if u find these combination u ll get their respective code my teacher said this thing to me :O

  39. heena
    • 2 years ago
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    and the thing ans said by austria and blus dat thing is relted to genetic code which is general isntd? and here acc to question this cant be the xact answer :?

  40. heena
    • 2 years ago
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    no there is nothing causing trouble lol just wanna clear dats it becoz if i m wrong den in future i ll say this misleading concepts so its hould be clear though right? :P

  41. blues
    • 2 years ago
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    Cool.

  42. rahulchatterjee
    • 2 years ago
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    thanxx for the infos... :)

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