How did the researchers estimate that the original FOXP2 mutation happened 300,000–400,000 years ago?
A. by examining the fossil record
B. They found the mutation in chimpanzee DNA.
C. They found the mutation in Neandertal DNA.
D. They found the mutation in 300,000-year-old human remains.
E. using a molecular clock
C. They found the mutation in Neandertal DNA.
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A patient, Jennifer, presents in an ER with severe stomach cramps and diarrhea. She was recently swimming in unclean water. Which protist would be the most likely cause of her symptoms?
A. Toxoplasma gondii B. Plasmodium C. Leishmaniasis D. Giardia 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 these organisms? How does it relate to the question? · 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 process by which fatty acids from triglycerides are converted to acetyl coenzyme A is called __________
Fill in the blank(s) with the appropriate word(s).
What major benefits do plants and mycorrhizal fungi receive from their symbiotic relationship?
A) Plants receive enzymes, and fungi receive nitrogen and phosphorus. B) Plants receive increased root surface area, and fungi receive digestive enzymes. C) Fungi receive photosynthetic products in exchange for living in plant root nodules. D) Plants receive nitrogen and phosphorus, and fungi receive photosynthetic products.
A racehorse cannot stand on one leg, but when it runs it rarely has more than one leg on the ground. Why is a running horse more stable than a standing one?
A) Its legs tilt so the hooves fall in line with its center of gravity. B) Its momentum gives it stability. C) It uses its neck for balance the way a tightrope walker uses a pole.