Which of the following adaptations has been exploited by at least one kind of parasite to circumvent the immune system of its host?

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#Question id: 3286

#Section 2: Evolution

 In a human population, the gene frequencies of the alleles for the ABO system are as follows:

A = 29%                         B = 7%                                    0=64%

Assuming complete random mating and Hardy-Weinberg equilibrium,

What are the blood type A frequencies in this population?

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#Question id: 12677

#Section 5: Applied Ecology & Evolution

Aquatic ecosystems that are most readily damaged by acid are those that lack an important buffer that dissolves into the runoff after a precipitation event. What is this buffer?

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#Question id: 4585

#Section 2: Evolution

The cow Bos primigenius (which is bred for meat and milk) has a smaller brain and larger eyes than closely related wild species of ungulates. These traits most likely arose by ________.

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#Question id: 12313

#Section 1: Ecology

Modern behavioural concepts relate the cost of a behavior to its benefit. Under which relationship might a behavior be performed?

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#Question id: 11245

#Section 1: Ecology

Monogamy is most prevalent among ______ and is rare among ________.