What term refers to the renewal of a natural
ecosystem that has been degraded?
a. ecological balance
b. ecological restoration
c. eutrophication
d. biological magnification
e. bioremediation
B
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Genetic maps are based on recombination frequencies. Because both odd and even numbers of crossovers can occur between any two gene loci, as the physical distance between two loci increases, the maximum recombination frequency levels off at 50%. However, suppose you discovered a species where only an even number of crossovers can occur between any two gene loci. In this case, as the physical distance between two loci increases, you would expect the maximum recombination frequency to
A. remain at zero. B. increase with no limit. C. level off at 25%. D. level off at 75%. E. level off at 100%. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about recombination frequency? 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?
Defining the genome as "the genetic material transmitted from parents to offspring" excludes which life form?
A. bacteria B. archaeons C. eukaryotic organelles D. viruses E. All of the answer options are included in this definition.
Saturated fatty acids have _________________ than unsaturated fatty acids, which is why they exist as a ____________ at room temperature.
A) fewer hydrogen atoms; solid B) fewer double bonds; solid C) more double bonds; liquid D) more carbon atoms; solid E) more glycerol molecules; liquid
A human skin cell contains 46 chromosomes (23 paternally inherited and 23 maternally inherited). Before mitosis begins, this cell must duplicate its genetic material. What are the products of this duplication?
A) 92 chromosomes, each consisting of 2 homologous chromatids connected by a centromere B) 23 chromosomes, each consisting of a maternal and a paternal chromatid connected by a centromere C) 92 chromatids, each consisting of 2 sister chromosomes connected by a kinetochore D) 92 sister chromatids, in 46 pairs that are connected by a centromere E) 46 chromosomes, each consisting of 2 sister chromatids connected by a kinetochore