The initial transcript, often called the ________ transcript, is identical in base sequence
(except that U replaces T) to the sequence of the other DNA strand.
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Primary
, For many of our genes, the initial RNA transcript needs to be cleaved into pieces.
Some of the pieces, called ____ ____, are discarded, but other alternating pieces called
___ ____ are retained and fused in the same linear order as their order when transcribed.
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introns, exons
When a gene is expressed, the two DNA strands are locally unwound to allow access
by the ___________________ machinery.
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Transcriptional
Which, if any, of the following statements are false?
a) During translation, the individual codons of an mRNA are "read" by transient
hydrogen bonding to a complementary anticodon sequence on a transfer RNA.
b) According to their anticodon, transfer RNAs usually have a specific amino acid
attached to their 3' end.
c) When the anticodon of a tRNA binds to a codon with a suitably complementary
sequence, the amino acid is released and becomes part of a polypeptide.
d) Translation terminates at an in-frame termination codon (UAA, UAG, or UGA in the
universal genetic code) because for these codons, there are no transfer RNAs with a
complementary anticodon sequence.
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(except that U replaces T) to the sequence of the other DNA strand.
Give this one a try later!
Primary
, For many of our genes, the initial RNA transcript needs to be cleaved into pieces.
Some of the pieces, called ____ ____, are discarded, but other alternating pieces called
___ ____ are retained and fused in the same linear order as their order when transcribed.
Give this one a try later!
introns, exons
When a gene is expressed, the two DNA strands are locally unwound to allow access
by the ___________________ machinery.
Give this one a try later!
Transcriptional
Which, if any, of the following statements are false?
a) During translation, the individual codons of an mRNA are "read" by transient
hydrogen bonding to a complementary anticodon sequence on a transfer RNA.
b) According to their anticodon, transfer RNAs usually have a specific amino acid
attached to their 3' end.
c) When the anticodon of a tRNA binds to a codon with a suitably complementary
sequence, the amino acid is released and becomes part of a polypeptide.
d) Translation terminates at an in-frame termination codon (UAA, UAG, or UGA in the
universal genetic code) because for these codons, there are no transfer RNAs with a
complementary anticodon sequence.
Give this one a try later!
