How could you test whether the association between leafcutter ants and antibiotic-producing fungi represents an obligate mutualistic relationship for the fungi?
a. test how long the mutualistic fungi can survive on ants
b. test whether the antibiotics produced by the fungi are specific to the ants' fungal gardens
c. test whether the fungal species found on ants can survive without the ants
d. conduct a survey to find other fungi that are also associated with the ants
C
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The ____ are a group of parasitic fungi that are killing amphibians around the world
a. Chytrids b. ascomycetes c. basidiomycetes d. glomeromycetes e. Zygomycetes
In balanced translocation heterozygotes, which pattern of chromosome segregation produces viable gametes and progeny?
A) adjacent-1 segregation B) adjacent-2 segregation C) alternate segregation D) Adjacent-1 and alternate segregation are both viable. E) Adjacent-1, adjacent-2, and alternate segregation are all viable.
A 60-year-old having frequent constipation runs a greater risk of this condition
A) diverticulitis B) peptic ulcer C) diarrhea D) appendicitis
What is the ultimate explanation for modern human preference for fatty foods?
a. When we eat fatty foods, taste receptors on our tongue are stimulated, sending an action potential to our brain triggering the "do-it-again" centers. Fatty foods have nine calories per gram, unlike carbohydrates and proteins, which have four calories b. per gram, and in our environment we need to maximize our caloric intake in order to maximize our fitness. c. Ancestral humans who preferred fatty foods were less likely to starve, leaving more offspring in the next generation. d. We do not actually prefer fatty foods; we prefer sugary foods. e. We like the way that lipid-rich foods taste.