During recombination in E. coli, ________ recognize(s) regions of sequence similarity and promote(s) strand invasion, while ________ bind(s) to a Holliday junction promoting strand migration.

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#Question id: 5562

#5. Developmental Biology

In an egg cell treated with a chemical that binds calcium and magnesium ions, the ________.

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#Question id: 10543

#6. System Physiology – Plant

Effectors are molecules that change the plant’s structure, metabolism, or hormonal regulation to the advantage of the pathogen, which of the following is effector molecules?

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#Question id: 3001

#2. Cellular Organization

Which of the following participate in heat resistance of endospore?

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#Question id: 4942

#11. Evolution and Behavior

Which of the following has not yet been synthesized in laboratory experiments studying the origin of life?

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#Question id: 10755

#10. Ecological Principles

For two species A and B in competition, the carrying capacities, competition coefficients, per capita growth rate and population size are

KA = 1000          KB = 1200        α= .5    r A= .3    N1= 500         N2= 200          

According to the Lotka-Volterra model, what is growth rate of species A?