A zombie apocalypse wipes out almost the entire human species before the zombie threat is eliminated. Only a group of 100 people who were at a family reunion on an uninhabited island survived. They returned to the mainland completely unaware of what had happened to everyone. Answer the following question(s) regarding the few survivors who now begin to rebuild the human population.Certain traits will have been lost from the gene pool forever. This loss of diversity in a reduced population is called ________.
A. bottleneck effect
B. gene flow
C. founder effect
D. genetic drift
Answer: A
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Which term describes chromosomes whose centromeres are located closer to one end of the chromosome?
A) metacentric B) acrocentric C) holocentric D) anacentric
According to the second law of thermodynamics, when energy is converted from one form to another, some of that energy is transformed into heat energy, which is generally released from the "system."
Indicate whether the statement is true or false
A plant has a mutation in the gene that codes for systemin. What is the likely consequence of this mutation?
A. The plant will have a stronger than normal wound response. B. The mutated form of systemin would be recognized as a pathogen and a hypersensitive response will be initiated. C. The levels of jasmonic acid will build inside the cell creating a toxic environment. D. Systemin receptors will not be activated and proteinase inhibitor will not be transcribed. E. R genes will fail to match up with avr genes. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? does the question contain and what do they mean? Gather Content · What do you already know about about the function of systemin? 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?
Trimming a shrub will make it become more bushy (have more lateral growth) primarily due to a
reduction in the amount of ____.
a. auxin b. ethylene c. abscisic acid d. gibberellin e. cytokinin