Explain the purpose and uses of the chi-square test.
What will be an ideal response?
A chi square test is used to determine the validity of a hypothesis as supported, or not supported, by the data. Chi-square compares the observed results with expected results.
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The DNA sequence capable of pairing with 5' CGATTAGT 3' is:
A. 5' CGATTAGT 3'. B. 5' GCTAATCA 3'. C. 3' CGATTAGT 5'. D. 3' GCTAATCA 5'. 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 know about base pairing? How does it relate to the question? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
A mutation in the lacI gene prevents the gene product from binding allolactose. What will the expression level of the operon be in the absence of lactose?
A. no transcription B. postive regulation C. constitutively active D. low level of expression
Which of the following choices below represents the correct way to repair the mismatch?
(a) New Strand A, Template T (b) New Strand C, Template G (c) New Strand C, Template A (c) New Strand G, Template T
The ability for cancer cells to divide indefinitely is made possible because they:
A) rebuild their telomeres after every cell division. B) rebuild their centromeres after every cell division. C) break down their centromeres after every cell division. D) break down their telomeres after every cell division. E) avoid interphase during cell division.