Figure 40.12A
Use the figure above showing a marine bony fish to answer the following question.
Blanks "C" and "D" should be labeled, respectively, _____.
A. in; large
B. in; small
C. out; large
D. out; small
E. in; equal
Answer: D
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Xeroderma pigmentosum (XP) is a rare autosomal recessive disorder. Patients with XP exhibit a cellular hypersensitivity to ultraviolet (UV) radiation, a high incidence of skin cancer and premature aging. Based on these clinical characteristics, what is the most likely cause for this disease?
A. defects in DNA repair B. defects in DNA replication C. lack of telomerase activity D. shortened telomeres 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 DNA replication and repair? 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?
Nitrogen-fixing bacteria convert gaseous nitrogen into:a
amino acids. b. phosphate. c. ammonia. d. nitrite. e. nitrate.
Meiosis can occur
a. in all sexually reproducing organisms. b. only when an organism is diploid. c. only in multicellular organisms. d. only in haploid organisms. e. only in single-celled organisms.
For a gene with two alternative alleles, B and b, the term q2 in the Hardy-Weinberg equation represents
A. the frequency of the B allele. B. the frequency of the Bb genotype. C. the total number of individuals in the population. D. the frequency of the bb genotype. E. the total number of alleles for that gene in the population.