18/11/14
    Today we learn about Mutation.Mutation is any inheritable change in the base sequence of DNA.
A strain carrying such a change is mutant.Differ from parental strain in genotype and phenotype.Mutation can be spontaneous or induced.
Spontaneous mutation-occurs without mutagens
                                    -alters the structure of bases in DNA

Induced mutation-chemical and physical agents to induced the mutation
There are many types of mutations
Base substitution-single base at one point in DNA sequence replace with different base
Missence mutation

Silent Mutations
http://i0.wp.com/www.namrata.co/wp-content/uploads/2013/04/Point-mutations.png?resize=384%2C177


Nonsense Mutations
http://www7.0zz0.com/2011/08/05/01/948870633.gif


Frameshift mutatio

Before learning about mutation in this class I thought that when a mutation a change always occur in term of product produce.After this class I got to know there a mutation happen but the product produce is the same because the base changed is alost the same.Also after learning this I got to know that there are many types of mutations where before this I thought there is only one mutation only happen.I also just  know that mutation occur naturally and can be induced.

What I have learn:
-Missence mutations lead to significant changes in protein
-Nonsence mutations results from stop codon
-Frameshift mutations is add or remove a base 

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