Which technique is used to mass produce copies of a section of DNA outside of a cell?

a. Transcription
b. Translation
c. Electrophoresis
d. DNA sequencing
e. Polymerase chain reaction


e

Biology & Microbiology

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The coelacanth gave rise to the ____

a. ray-finned fish b. chimaeras c. tetrapods d. dogfish e. lungfish.

Biology & Microbiology

Explain the problems associated with the genetic disorder Tay-Sachs.

What will be an ideal response?

Biology & Microbiology

What key factor limits the number of trophic levels in an ecosystem?

a. maximum solar radiation b. energy loss c. herbivore size d. predator size e. climate

Biology & Microbiology

What is the correct order of the steps in the progression of lung cancer in a smoker?1. Cilia are lost2. There is a thickening and callusing of the cells lining the bronchi3. Metastasis occurs4. A tumor forms5. Cells with atypical nuclei appear

A. 5, 1, 2, 3, 4 B. 2, 1, 4, 5, 3 C. 1, 2, 4, 3, 5 D. 1, 2, 3, 4, 5 E. 2, 1, 5, 4, 3

Biology & Microbiology