By organizing socially into a group, individual animals may benefit by
A) coexisting peacefully instead of fighting with group members for dominance.
B) reducing intraspecific competition for food.
C) increasing access to a common food supply.
D) equalizing the number of offspring produced by each group member.
C
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To estimate the total concentration of a beneficial bacterial species in yogurt, ________ would provide the quickest results
A) fluorescence in situ hybridization B) qPCR C) RT-PCR D) a Southern blot
Ectomycorrhizae, associations in which the fungal hyphae surround but do not penetrate the cell walls of the plant roots, usually involve
A. ascomycetes. B. basidiomycetes. C. zygomycetes. D. ascomycetes and basidiomycetes. E. ascomycetes and zygomycetes.
It is proposed that Cro-Magnons were responsible for the extinction of many large mammals during the Pleistocene epoch. How could this feat have been accomplished?
A. Cro-Magnon man was the first species of hominids to hunt in groups. This would have increased their chance of killing larger animals. B. Cro-Magnon man was the first species of hominid to use fire. This would have increased their success during hunting. C. Cro-Magnon man was the most efficient bipedal species. They would have been able to run after prey species more efficiently than any of their predecessors. D. Cro-Magnon man had an increase in tool technology that enabled them to kill animals from a distance.
In rabbits, there are four alleles at the c locus. Arranged in dominance sequence they are C (agouti), cch (chinchilla), ch (Himalayan), and c (albino) ? Which of the following crosses will NOT be possible? ?
A. Two agouti rabbits to produce both chinchilla and Himalayan offspring B. Two chinchillas to produce 1/2 chinchilla and 1/2 Himalayan C. Two albino rabbits to produce all albino rabbits D. One Himalayan and one chinchilla to produce chinchilla rabbits E. One agouti and one chinchilla to produce agouti rabbits