Can someone explain DNA replication to me in simple steps please...

  • 0 votes

I don't understand what dna replication is and would be grateful if someone could explain it in simple words/steps for me.

Thank you :) 

p.s. diagrams would be helpful too 

Posted Fri 15th June, 2012 @ 18:16 by ? Secret - Team GR

8 Answers

  • 1 vote

i'll try... 

So the main thing to remember is that the DNA pairs G-C and T-A "unzip".. Remember 'unzip'

(http://www.chemguide.co.uk/organicprops/aminoacids/dnarep1.gif)

Next when they are split other bases (G,T,C and A) join on:

(http://www.chemguide.co.uk/organicprops/aminoacids/dnarep2.gif)

This is all under control of number of enzymes, one of which is responsible for joining up nucleotides along the chain in the way.

The same happens to the other half of the original DNA. Making two new REPLICATE to the original DNA.

I hope this helps.. Tell me if i have missed anything out.. 

Answered Fri 15th June, 2012 @ 18:27 by simran
  • 1 vote

Basically, DNA replication takes place in 2 proccesses known as Transcription and Translation.

The two strands of DNA unzip.

The DNA is used as a template to make the mRNA. Base pairing ensures this is complementary (An exact match to the opposite strand)

The step is called TRANSCRIPTION.

The mRNA molecule moves out of the nucleus ad joins with a ribosome.

Amino acids that match the MRNA code are brought to the ribosome by molecules called tRNA

The job of the ribosome is to stick amino acids together in a chain to make proteins, etc.

THIS IS TRANSLATION. :)

Answered Fri 15th June, 2012 @ 18:32 by Lullu
  • 1 vote

Thanx guys for your help !

Can someone just tell me why simran answer has been voted down to -1. But thanks anyway for the diagrams and your help. 

Answered Fri 15th June, 2012 @ 20:46 by ? Secret - Team GR
  • 0 votes

Lullu or anybody else, wat diagram would you use to represent this step...

the DNA is used as a template to make the mRNA. Base pairing ensures this is complementary (An exact match to the opposite strand)


Answered Sat 16th June, 2012 @ 17:24 by ? Secret - Team GR
  • 0 votes

What is MRNA ???

Answered Sat 16th June, 2012 @ 17:25 by ? Secret - Team GR
  • 0 votes

mRNA is messenger ribonucleic acid

DNA helix unzipping and being copied (http://www.bbc.co.uk/schools/gcsebitesize/science/images/add_edex_bio_dna.jpg)

DNA helix unzipping and being copied

Answered Sun 17th June, 2012 @ 16:56 by Lullu
  • 0 votes

hope it helps!!!!!!!!

just imagine it as the DNA being copied exactly (almost like a clone)

:)

Answered Sun 17th June, 2012 @ 16:57 by Lullu
  • 0 votes

THANK YOUUUUUUUUUUUUU... helped me loads.. thnxx

I finally get it :)

Answered Mon 18th June, 2012 @ 18:04 by ? Secret - Team GR