A researcher is trying to alter five successive base pairs in the middle of a PCR amplified DNA fragments. Which technique is the most recommended for performing such experiment? 

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#Question id: 5535

#Unit 5. Developmental Biology

What type of animal forms a trophoblast for the duration of its early development?

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#Question id: 32588

#Unit 2. Cellular Organization

Cytoplasmic dynein, itself a huge protein complex, requires association with a second large protein complex which is requires to translocate organelles effectively, called:

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#Question id: 23097

#Unit 12. Applied Biology

During which stage of wastewater treatment is the primary effluent aerated to allow for biodegradation by aerobic microbes?

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#Question id: 30114

#Unit 1. Molecules and their Interaction Relevant to Biology

In the case of monoclonal antibody production by hybridoma technology, myeloma cells used lack the enzyme hypxanthine - guanine phosphoriboxyl transferase(HGPRT) such that fused cells can only survive when selected on hypoxanthine-aminopterinthymdine (HAT). What is the role of aminopterin in this medium?

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#Question id: 29031

#Unit 11. Evolution and Behavior

A certain species shows where they live is not actively  defended, and a completely homogenous habitat where resources are distributed throughout that showing____