Describe the difference between microevolution and macroevolution
What will be an ideal response?
Microevolution refers to allele frequency changes within a population or species. For example, when natural selection works to change traits within a population, such as changes in beak sizes of a bird population or changes in antibiotic resistance in a bacterial population.
Macroevolution however, refers to large scale evolutionary events such as the diversification of several new species or the mass extinction of a whole species. It does not examine specific traits (alleles); instead, it looks at big picture events.
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Sudan IV, a dye that binds to nonpolar molecules, is used to detect the presence of macromolecules in food. Sudan IV would test positive in the presence of what macromolecule?
A. Starch B. DNA C. Hemoglobin D. Chitin E. Fats 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 know about nonpolar molecules? 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?
The equation CaSiO3 + CO2 CaCO3 + SiO2 takes into account which of the following processes associated with the long-term carbon cycle?
A. volcanism B. chemical weathering C. subduction D. plate tectonics E. bacteria-based oxidation
Refer to Figure 44-1 in the book. To which group are sponges more closely related?
A. choanoflagellates B. bilaterians C. equal relationship to both choanoflagellates and biletarians
Which term refers to the flow of genetic information from DNA to mRNA to proteins?
a. the central dogma b. gene expression c. telomere replication d. the transcription bubble