Which of the following forms spores in a sack like structure?
A. porospores
b. chlamydiospores
c. sporangiospores
d. arthrospores
Ans: c. sporangiospores
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Which of the following environmental factors might lead to year-round, rather than seasonal, reproductive activity?
A. a yearly rainy season B. stable food supplies C. day length D. daily ocean tides E. seasonal temperature changes
Assume a double crossover occurs in this pair of chromosomes that results in chromatids of the genotypes A b C and a B c. If the first crossover (the one between A and B) involves chromatids 1 (A B C) & 4 (a b c), which chromatids could be involved in the second crossover?
Consider a pair of homologous chromosomes heterozygous for three genes (e.g. A B C / a b c) during prophase I of meiosis. Let the sister chromatids of one homolog be numbered 1 and 2; and the sister chromatids of the other homolog be numbered 3 and 4. A) 1 & 2 B) 3 & 4 C) 1 & 3 D) 2 & 4 E) 1 & 4 F) 2 & 3
Mike has just returned home from college for the summer and notices that his 8-year old Dalmation dog Patches is limping and has difficulty walking up and down stairs. When Mike takes Patches to the vet, the vet recommends that Mike put him on a low-purine diet. This dietary change will lessen the formation of painful precipitates of ___________ in Patches' joints.
A. ammonia B. urea C. adenine and guanine D. uric acid E. NaCl 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 purine? What other information is related to the question? Choose Answer Given what you now know, what information 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?
Two species that interact closely for generations through symbiosis often _______________, regardless of whether one species helps or harms another. Each species acts as a selective agent that shifts the range of variation in the other
Fill in the blank(s) with correct word