Vectors Uses for Animal Cell Culture
Which one of the following is true about Yeast Episomal plasmids (YEp) vectors?

Allows transformation by using crossing over
Carries centromere and telomere sequences
Carries autonomously replicating sequence
Has a origin of replication and rep genes

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Vectors Uses for Animal Cell Culture
Retroviruses have advantage for being used as vector for animal cells because

viral gene expression is driven by strong promoters
they cover a wide host range
All of these
infection does not lead to cell death, infected cells produce virus over an indefinite period

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