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Biology P2
Inheritance
Mutations
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Cards (9)
the
base sequence
of a gene determines the
amino acid sequence
of a protein
what happens all the time?
mutations
what is
mutation
?
A change in the
DNA
sequence.
what is a variation?
the
differences
that exist between individuals of a
species
how to know when mutation occured?
a single base will change
why changing a single base doesn't change the whole AMAC sequence?
different base triplets can sometimes
encode
for the
same
amino acid
mutations mostly have
no effect
on the function of the
protein
what happens when a mutation changes the shape of protein?
enzyme
may no longer fit the substrate binding site or a structural protein may lose its
strength.
what is the role for non-coding parts of DNA?
can switch genes on and
off
so variations in these areas of DNA may affect how genes are
expressed
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