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Topic 2: Genes and Health
Genetic Code
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What is a GENE?
• A
SERIES
of
BASES
on a
DNA molecule
which
CODES
for a series of
AMINO ACIDS
in a
POLYPEPTIDE CHAIN
What BONDS are between AMINO ACIDS and what do they FORM?
•
PEPTIDE BONDS
• forming a
POLYPEPTIDE CHAIN
What are NON- CODING sections of DNA called
•
INTRONS
What are CODING regions of DNA called?
•
EXONS
What is NON- OVERLAPPING?
• Each
TRIPLET
is only read
ONCE
and
TRIPLETS
don’t
SHARE
any
BASES
What is DEGENERATE?
• More than one
TRIPLET
CODES for the
SAME AMINO ACID
( can prevent mutations)
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