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: 5757

#XL - S Microbiology

A new E. coli mutant was tested for auxotrophy. The mutant grows on:

minimal medium (M) + arginine (A) + proline (P)

M + P + histidine (H)

M + A + H + P

but not on M or on M + A + H. The mutant requires

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#Question id: 4903

#XL - T Zoology

 In genetic maternal effect

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#Question id: 15757

#XL - S Microbiology

Which of the following growth hormones produces apical dominance?

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#Question id: 10678

#XL - T Zoology

In competitive species N1 and N2, four individuals of N2 use the same resource as one individuals of N1. According conversion factor, what is the value of per capita competitive effect of N2 on N1(α) and per capita effect of N1 on N2 ( β) respectively?

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#Question id: 658

#XL - Q Biochemistry

To what level of structure do α-helices belong?