To have a thing to compare your test results to. The control is not changed at all in an experiment so your other test results can be compared to it. It’s like the base level kinda
Explanation:
A proto-oncogene is a<em> normal gene that usually can stimulate growth and differentiation but if it mutates can become an oncogene and cause cancer</em>. In order to test this gene, you can <em>activate it by promoting its mutation with a DNA amplification (like the one you did in the question) or a chromosomal translocation,</em> then you can observe it in a culture <em>if there's cell transformation you can confirm your hypothesis.</em>
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Answer:
a. F. W. Went isolated the chemical substance responsible for
communicating stimulus information- TRUE
b. The chemical substance responsible for communicating stimulus
information is a hormone- TRUE
c.Charles and Francis Darwin confirmed that the tip of a plant stem is
responsible for initiating the phototropic response- TRUE
d.When the tip of a stem is covered with a transparent cap, the stem bends
toward the light source anyway- TRUE
e. When the base of a stem is covered with an opaque shield, the stem
bends away from the light source- FALSE
f. An example of another control mechanism is that some plants require
more than 12 hours of darkness to produce flowers- TRUE
