Archaea have multiple types of RNA polymerase
Indicate whether the statement is true or false.
T
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The finding that homeotic genes are present in both mammals and insects indicates that these genes must
A. control the same traits. B. be on the same chromosomes. C. have arisen very early in the evolutionary history of animals. D. have developed independently and simultaneously. E. have been transmitted into mammals by an insect bite. 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 homeotic genes? 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?
Which of the following is the major reason why it has been difficult to treat viral infections with chemotherapeutic agents?
A. Viruses use the metabolic machinery of their hosts, which limits many of the potential points of attack. B. Viruses have no metabolism and therefore offer no selective point of attack. C. Viral metabolism resembles that of their hosts so there is no selective point of attack. D. Actually, viruses are not difficult to treat with chemotherapeutic agents.
The part of interphase when DNA is copied is the ____
a. G1 phase b. S phase c. G2 phase d. M phase e. R phase
Imagine that you've isolated a yeast mutant that contains histones resistant to acetylation. What phenotype do you predict for this mutant?
A) The mutant will grow rapidly. B) The mutant will require galactose for growth. C) The mutant will show low levels of gene expression. D) The mutant will show high levels of gene expression.