In most species, all mRNA transcripts begin with _____
a. methionine
b. a ribosome
c. AUG
d. the P site
e. an anticodon
ANSWER: c
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Based on the data in the figure, which is a likely reason for speciation between these two sympatric species of frogs?
a. allopolyploidy
b. habitat isolation
c. hybrid inviability
d. temporal isolation
e. mechanical isolation
During the initiation of nitrogen-fixation nodules, a host plant with genetic mutations releases altered forms of flavonoids. What is the likely consequence of this?
A. Infection threads will grow in the wrong direction. B. More nodules will form than necessary. C. Nodules will be misshapen. D. The bacteria will not produce any Nod factors. E. The bacterial will produce higher levels of Nod factors.
________ are a major source of restriction enzymes
A) Plant cells B) Human cells C) Bacteria
What effect would drinking salt water have in a human?
What will be an ideal response?