The ectoderm is to the central nervous system as the mesoderm is to the
A. epidermis.
B. respiratory tube.
C. digestive tract.
D. skeletal muscle.
E. peripheral nervous system.
D. skeletal muscle.
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(Note the phylogeny is drawn with diagonal branches rather than the rectangular branches seen in the text.) If the stop codon in the Brassica plant CAL gene appeared in the cauliflower lineage after broccoli and cauliflower had diverged from each other, it would be expected that
A. both broccoli and cauliflower flowers would be arrested as buds.
B. both broccoli and cauliflower would develop flowers normally.
C. broccoli would develop flowers normally, and cauliflower flowers would be arrested as buds.
D. cauliflower would develop flowers normally, and broccoli flowers would be arrested as buds.
Clarify Question
· What is the key concept addressed by the question?
· What type of thinking is required?
· What key words does the question contain and what do they mean?
Gather Content
· What do you already know about the CAL gene?
Consider Possibilities · Consider the different answer options. Which can you rule out?
Choose Answer
· Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
Reflect on Process
· Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The amplification of recombinant plasmids occurs by:
a. the growth of the plasmid DNA. b. DNA replication of plasmids outside a host cell. c. the process of growth and division of the host cell. d. transformation of bacterial cells. e. the polymerase chain reaction
The ability of a lens to gather light is referred to as its
A) resolution. B) numerical aperture. C) refraction. D) contrast. E) magnification.
The largest hole in the ozone layer occurs in the stratospheric layer over
A) the Amazon rainforests.
B) the eastern coast of the United States.
C) the western coast of the United States.
D) Africa and South America.
E) Antarctica.