Typically, members of a cohort are tracked ____
a. until they become independent
b. until their breeding age
c. for a period of time and then released in the environment to serve their purpose in the community
d. from birth to death
e. as long as they are in good health and serve the purpose of a study
ANSWER: d
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Your biology professor takes the class on a field trip to a local lake. You spend an hour studying the lake and writing down all observations. You hypothesize that the lake is oligotrophic. Which observations would support this hypothesis? Check all that apply.
_____ The shoreline is mostly rock and sand with very little vegetative matter. _____ The lake has extensive aquatic plant beds. _____ The lake has little planktonic growth. _____ The bottom of the lake is easily visible. _____ An oxygen probe reveals low oxygen content in the water. 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 eutrophic vs. oligotrophic lakes? 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?
If there are 100 individuals in a population and 20 are homozygous for B, 60 are heterozygous, and 20 are homozygous for b, what is the allele frequency of B?
A. 20% B. 40% C. 50% D. 80% E. It can't be calculated from this information.
Which of the following is a way prokaryotic DNA can be altered by bacteriophages?
a. through binary fission b. through mitosis c. through conjugation d. through transduction
The ________ resemble the ancestor of all animals
a. choanoflagellates b. dinoflagellates c. amoeboflagellates d. euglenoids e. ciliates