What is the most common way of introducing recombinant DNA into bacterial cells?
A) gel electrophoresis B) PCR C) transformation D) viral vectors
Answer: C
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Annual net primary productivity
A. is equal on all continents. B. generally increases from the equator to the poles. C. is greatest in the open ocean. D. is usually higher in warm areas. E. None of these choices are correct.
The presence of human genes in crop plants and farm animals is an ongoing advancement in scientific engineering. The main techniques used to achieve this include (select all that apply)A) the isolation and insertion of genes for antibodies into plants by bacterial hosts.B) vector transfer of foreign DNA from one organism to another.C) injection of DNA directly into animals which is then spliced into their genome by DNA endonuclease.D) transcriptase and proteins are added to organisms inserting the cDNA into different organisms.
What will be an ideal response?
It is notoriously difficult to perform unbiased studies when human subjects are used. When governmental agencies such as the U.S. Food and Drug Administration (FDA) are trying to determine the validity of scientific claims, they very closely examine the
methods used in the experiments. What are the three phases of clinical trial, and which one(s) must a drug pass in order to be sold in U.S. markets? What will be an ideal response?
Answer the following questions true (T) or false (F)
1. A reversion mutation is when a base-substitution mutation is changed back to the original DNA sequence. 2. Many mutagens cause a rate of mutation that promotes the development of cancers; such mutagens are called carcinogens. 3. DNA transposons rely on the enzyme reverse transcriptase to insert a copy of cDNA into a new location in the genome.