Friday, January 21, 2011

Pech's Blog entry #12

During the past few weeks, we've been studying DNA replication, and RNA. DNA replication always happen during the interphase period because during the interphase, it is usually the resting time and the longest phase compare to the other cell cycles. DNA can not transfer itself to the ribosome to create protein, it goes through DNA replication and by using the polymerase to make new bases and RNA primase, it create a new RNA strand. The RNA strand carries the datas from DNA to the ribosomes and after the RNA enter the ribosomes, new proteins are created.
We've also talked about mutation. Mutation is the change in DNA sequence and there are three different type of mutation. They are substitution, insertion and deletion. During the substitution process it replaces one nucleotide with another, it also can be known as the silent mutation because there is no changes in the protein. During the insertion process is when the mutation add another nucleotides into the sequence causing the protein to change. Deletion is when mutations remove nucleotides from the sequence.

No comments:

Post a Comment