Cloning Vectors
Difference between λ gt 10 and λ gt 11 vectors is that

λ gt 10 is an expression vector
λ gt 11 is a replacement vector
λ gt 11 is an expression vector
λ gt 10 is a replacement vector

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Cloning Vectors
Cosmid vectors are

cryptic plasmids
plasmids that contain fragment of λ DNA including the cos site
phages that lack cos site
plasmids that have no selection marker

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