Which type of DNA analysis is likely to be most effective when analyzing the ancient remains of a mummified body?
A. analysis of cDNA
B. analysis of short tandem repeats
C. whole genome sequencing
D. analysis of mitochondrial DNA
Answer: D
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Which of the following is an exogenous antigen?
A. a bacterium inside a cell B. a virus inside a cell C. a bacterium outside a cell D. a non-infected human cell E. the malaria parasite inside a red blood cell
Why do many animals do most of their calling at dawn and dusk?
A. Most predators are not active at those time. B. Air is less turbulent and carries sound better. C. Pheromones are released at dawn and dusk. D. Animals preferentially mate at night. E. Imprinting behaviors are better received at those time.
Individuals medically diagnosed with "dry eyes" experience feelings of dryness, itchiness, burning, and general irritation in their eyes. Dry eyes can be caused by a decreased production of tears by the tear-producing glands in the eyes. What treatment would help alleviate dry eyes?
A) stimulating production of aqueous humor B) blocking the eyelid openings used to drain tears C) stimulating production of vitreous humor
A cell biologist examines a skin cell from a lizard during metaphase of mitosis and determines that 20 chromatids are present. The role of meiosis in this species is to (Check all that apply)
_____ Produce 4 daughter cells that are genetically different from each other. _____ Produce 4 daughter cells that are genetically different from the original parental cell. _____ Reduce the number of chromosomes per cell from 10 to 5. _____ Reduce the number of chromosomes per cell from 20 to 10. 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 meiosis? 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?