Which of the following are the closest ancestors of humans (genus Homo)?
A. chimpanzees
B. australopithecines
C. prosimians
D. gibbons
B. australopithecines
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How many tetrads are present in a single elephant cell (2n=56) during metaphase I of meiosis?
What will be an ideal response? 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 tetrads? 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?
_________ occurs when 50% of a protein produces a different phenotype than that produced by 100% or 0% of the protein.
A. Incomplete dominance B. Recessive inheritance C. Codominance D. Loss of function mutation E. Hybridization
What is characteristic of adult frogs?
a. gills b. sucking air into their lungs c. countercurrent exchange d. pushing air into their lungs e. drawing water by inhalation across their gills
How does the cell wall of bacteria and archaea differ?
A) Bacteria use pseudopeptidoglycan. B) Bacteria use peptidoglycan. C) Bacteria have a lot of diversity in the makeup of their cell walls. D) Archaea use peptidoglycan. E) Archaea have little diversity in the makeup of their cell walls.