In an imagined transduction experiment with alleles a+, b+, and c+, a+ alone was transduced into an auxotroph 1400 times, b+ alone 1200 times, and c+ alone 970 times
Genes a+ and b+ were both found 10 times, b+ and c+ 2 times, and a+ and c+ one time. What can you conclude? A) Cotransduction is too infrequent to be used to map genes.
B) Genes a and c cotransduce only accidentally.
C) Genes a and b are more closely linked than a and c or b and c.
D) Genes a and c are found together only if double crossovers have occurred.
E) Transduction of gene c is very rare.
C
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Which trophic level would be best represented by a rabbit?
a. decomposer b. detritivore c. primary consumer d. primary producer e. secondary consumer
An immunization against cow pox should protect an individual:a
by increasing the production of lymphocytes by the bone marrow. b. through the production of diverse antibodies. c. by initiating a secondary immune response. d. against other antigens with the same antigenic determinants. e. against other bacterial infections.
Predict the result when a phosphate-containing chemical is released by a factory into a pond
A) All living things will always die in such cases. B) Eutrophication will occur. C) Climax species will invade. D) Predatory fish will increase in population faster than other living things.
Competition between beneficial microbes and potential pathogens is called microbial (antagonisms/synergy/toxicity)
What will be an ideal response?