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Inheritance, Variation and Evolution
Inheritance
Protein synthesis
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Created by
Yuvraj Badesha
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Cards (6)
In humans, there are
20
different
amino
acids
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Amino acid order
Determines the
shape
of the
protein
and its
function
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Protein sequence
Determined by the sequence of
bases
in the
gene
for that protein
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Protein synthesis
1. Cell reads
DNA
sequence as
triplets
of
bases
2. Each
triplet
encodes for a specific
amino acid
3. First stage takes place in the
nucleus
4. Second stage takes place in the
cytoplasm
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Transcription
1. Base sequence of the gene is copied into a
complementary
template
molecule
2. Template is called
messenger
RNA
(
mRNA
)
3.
mRNA
is a
single
stranded molecule
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Translation
1.
mRNA
molecule attaches to a
ribosome
2.
Amino
acids
are brought to the
ribosome
on
carrier
molecules called
transfer
RNA
(
tRNA
)
3.
Ribosome
reads the
triplets
of
bases
on the
mRNA
and uses this to
join
together the correct
amino
acids
in the
correct
order
4. Protein
chain
folds into its
unique
shape
View source
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