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DNA
Replication DNA, RNA,
of DNA And Protein
Gene
Regulation
And mutation
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What are the 4 nitrohenous
bases?
Guanine, adenine, thymine and
cytocine
What is DNA often compared to?
Twisted ladder
What are nucleotides made out
of?
Sugar, phosphate group, and a
nitrogenous base
What did James Watson and
Francis Crick discover?
Double helix
Who had the transformation
experiment that demonstrated the
change of rough bacteria into
smooth?
Griffith
What bases bind together as a
complement?
Adenine to Thymine
Thymine to Adenine
Guanine to Cytosine
Cytosine to Guanine
What is responsible for
unwinding and unzipping the
double helix?
DNA helicase
What are the stages of DNA
replication?
Unwinding, base pairing, joining,
replication
What are two proteins associated
in replication of DNA?
DNA helicase, RNA primase,
DNA polymerase, Single
stranded binding protein
What is the difference between
eukaryotes and prokaryotes for
the number of orgins for DNA
replication?
Eukaryotes have multiple
Prokaryotes only have one
What is RNA?
Nucleic acid
What is the code for TGA?
ACU
What is Beadle and Tatum’s
hypothesis?
One gene codes for one
polypeptide
What are the three types of RNA
and their functions?
mRNA- travel from the nucleus to the ribosome to direct
synthesis of specific proteins.
rRNA- proteins to form ribosome in the cytoplasm.
tRNA- transports amino acids to the ribosome.
____codes for _____directs the
synthesis of ________
DNA, RNA, Proteins
What is a Hox gene?
Crucial in development and
decides which part goes where.
What is deletion a cause from?
Framework
How many steps occurs in
tryptophan synthesis?
5
T/F– An operator is a segment of
DNA that acts as an on/off switch
for translation.
True
What blocks transcription when
the operon is off?
A repressor
What is the difference between
Intron and exon?
Exton stays, intron goes
What is gene regulation?
Ability of an organism to control
which genes are transcribed in
response to the environment.
What is a codon?
A 3 base code in DNA or RNA
What is a mutagen?
Substance that causes mutations
What is a transcription?
Process in which water
evaporates from the inside to the
outside