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Chapter 15 Genes and How They Work
Read 15.1
The central dogma of molecular biology states that _________ is transcribed into _______ which
is translated into _____________________.
Type of RNA
mRNA
rRNA
tRNA
snRNA
SRP RNA
MicroRNA
Function
Read 15.2
A codon is ______ nucleotides that encode for one _______________________.
Skim 15.3 and 15.4
Initiation of transcription occurs at a ______________________.
In elongation of transcription the enzyme that adds ribonucleotides is ____________________.
___________________ occurs at specific sites (like hairpins) and releases the RNA transcript
from the DNA template.
Eukaryotic transcripts are modified in 3 ways:
1.
2.
3.
Read 15.6
The acceptor end of a tRNA binds to an __________________________.
The anticodon loop at the other end of the tRNA binds to ______________________________.
The 3 sites on the ribosome are:
1.
2.
3.
Read 15.7
_______________________ of translation begins at a start codon when an initiator tRNA enters
the ribosome and the large and small ribosomal subunits associate.
_______________________ of translation builds a protein by bringing amino acids into the
ribosome one a time using the codon sequence of the mRNA.
_______________________of translation occurs at a stop codon and causes the entire assembly
to fall apart.
Read 15.9
Which type of point mutation would have a greater impact on the final protein product,
substitutions or insertions?
_______________________are the starting point for evolution.