A chi-square test is used to
(a) determine if experimental data adequately matches what was expected.
(b) analyze a Punnett square.
(c) determine parental genotypes producing a given offspring genotype.
(d) determine if a trait is dominant or recessive.
(c) determine parental genotypes producing a given offspring genotype.
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It is possible to make a form of nitrogen that is useable by plants; however, the major drawback to this process is:
A. time involved B. getting enough nitrogen C. cost of converting nitrogen to a useable form D. temperatures must be extremely high E. it is difficult to contain the end product
Your friend examines an ivy vine growing on the side of a campus building and says, “Look – some of the branches on this plant have a different morphology. The leaf shapes and patterning are different, and there are flowers on some branches but not others. There must have been a mutation!” You respond,
A. “I think you’re right. Maybe there was a mutation in the LEAFY (LFY) gene, and the loss of LFY has promoted flowering and had pleiotropic effects on leaf morphology.” B. “No, those branches have just undergone phase change. Now they’re in the adult form, and have become competent to respond to flowering signals.” C. “I think you’re right. Maybe the embryonic flower (emf) gene is being overexpressed, and that’s causing flowers to form.” D. “No, those morphological changes are just evidence that this plant’s environment has changed during its lifetime.” Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about flowers? What other information is related to the question? Choose Answer Given what you now know, what information 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 infectious dose of Neisseria gonorrhoeae, the causeative agent of the sexually-transmitted infection gonorrhea is 10000. this means_____
Fill in the blank(s) with the appropriate word(s).
Which of the following are true of trash?
a. Cigarette filters can persist in the environment for 10 years. b. Components of a disposable diaper will persist for 100 years. c. A plastic bag can persist for 50 years. d. Many animals are killed by consuming trash each year. e. All of these are true.