Friday, January 27, 2017

If one part of the DNA molecule was ATGGCT, what would its protein look like?

DNA contains the genetic code which must be transcribed into another nucleic acid known as messenger RNA (mRNA) before a polypeptide can be assembled at the ribosome.


The RNA codons are complementary to the DNA code and follow base-pairing rules. In DNA, adenine pairs with thymine and cytosine with guanine. When RNA copies the genetic code, the only difference is that RNA has the base uracil instead of the base thymine. Whenever DNA has the...

DNA contains the genetic code which must be transcribed into another nucleic acid known as messenger RNA (mRNA) before a polypeptide can be assembled at the ribosome.


The RNA codons are complementary to the DNA code and follow base-pairing rules. In DNA, adenine pairs with thymine and cytosine with guanine. When RNA copies the genetic code, the only difference is that RNA has the base uracil instead of the base thymine. Whenever DNA has the base adenine, the complementary base in RNA is uracil.


The original DNA code reads ATGGCT. There are two triplets to be transcribed into messenger RNA. ATG is transcribed into UAC. The next triplet GCT is transcribed into CGA. 


Using the messenger RNA codon chart, UAC is the codon for the amino acid tyrosine. CGA is the codon for the amino acid arginine. 


Therefore, from the information given in the question, we can be sure that the two amino acids tyrosine and arginine are present in the protein. Whatever the rest of the chemical makeup of the protein is cannot be determined by the amount of information given in this question.

No comments:

Post a Comment