DNA and Mutations

The DNA strand is composed of a phosphate head, a sugar and a nitrogenous base. The shape of the DNA is a double helix that is made through the hydrogen bonds that connect the nitrogenous bases. The nitrogenous bases each have a letter: A,T, C or G. A sequence of three of these letters, called a codon, code for an amino acid. Those amino acids make proteins. A mutation can occur, in which any one of the letters, or bases, is changed. When that occurs, the amino acid changes which also refults in a change of the function of the protein. Lung cancer is an example of a mutation. The carcinogens in tobacco provide a chemical mutation that occurs in the tissues in the lungs.

Category:

Science & Technology

Tags:

• dna
• mutation
• smoking
• cigarettes
• double
• helix
• nitrogenous
• base
• amino
• acid
• phosphate
• head
• sugar
• hydrogen
• bonds
• dave
• patricia
• dora

[edajyamMie11]

this is a big help...

thanks a lot!!! 

[iman1994ify]

i love it ....it funny and awesome!!!!great idea



[marianacazares1]

loved it :)

[SamuelHammer]

Thanks for taking the time to make your really good drawings and even the cartoon characters were great. I liked how the DNA went all B & W at the end, implying changes that had taken place.

It would have been good to learn a little bit more about how the sequence of N-bases translates to the sequence of amino acids, and how a change in either sequence leads to a change in functionality....potentially leading to cancer.