Cellular control Flashcards
What are gene mutations
Random alteration in the nucleotide sequence of a cell of a living organism
What are point mutations
Changes in an individual gene due to miscopying of one or more nucleotides. They occur at a single point in a sequence
There can be more than one point mutation in a sequence
What are the types of point mutation
Substitution, Insertion and Deletion mutations
What are substitution mutation
The change of one base - resulting in one triplet code
What are insertion mutations
When a new base is inserted into DNA base sequence
Changes the triplet code at the point of mutation - causes a frameshift effect
What are deletion mutations
When a random base is deleted from the nucleotide base sequence
They change triplet code at point of mutation, but also have a frameshift effect
