The "one-gene, one-enzyme" hypothesis concluded that
A) only certain genes function in cells.
B) enzymes regulate gene activity.
C) DNA is transcribed into RNA, which is translated into protein.
D) specific enzymes give rise to specific genes.
E) each allele codes for a single type of protein.
E
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A pictogram is used to
A) compare which DNA base is present at a particular position in a conserved short DNA sequence among different species. B) compare the frequency of two-base sequences in the genomes of species thought to be closely related based on other types of evidence. C) visualize what the chromosomes of different species look like when condensed. D) align long sections of the genomes of different species that are the same in sequence.
Dormancy can be triggered by
a. low Pfr levels. b. the production of abscisic acid. c. nitrogen deficiency and low soil moisture. d. cold nights. e. all of these.
How has the Bt protein been used to increase insect-resistance in plants?
What will be an ideal response?
Why does the deamination of a 5-methylcytosine generally cause a mutation, but the deamination of a cytosine does not have the same effect?
a. because DNA repair systems are much more effective in recognizing G-U mispairing b. because DNA repair systems are less effective in recognizing G-T mispairing c. because DNA repair systems are much more effective in recognizing deaminated cytosine d. because DNA repair systems are less effective in recognizing deaminated 5- methylcytosine e. All of the above