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There are two different explanations for insulin production and they are contradictory. One says that the cDNA is inserted into the lac operon after the B galactosidase enzyme gene because they can share a promoter and this is the only way that a gene can be expressed. Without a promoter, a gene cannot be expressed. However, when they talk about identifying the recombinant plasmid the explanation changes. It says that a plasmid with 2 antiobiotic resistance genes is chosen and the insulin gene is placed in the middle of one of the antibiotic resistance genes to disrupt is function causing the other to act as a marker. Therefore the recombinant DNA can be identified when placed in each of the antibiotics. How can the antibiotic resistance method work when the gene is not placed in the lac operon? How can it be expressed without a promoter? Also how did the first method with the lac operon work? How was the recombinant plasmid identified in it?
Suppose if we hire the biological species concept where a population or group of populations within which genes are actually or potentially exchanged by interbreeding.
What is the effect of added succinate to rotenone-blocked, amytal-blocked, or cyanide-blocked mitochandria? In other words, can succinate help "bypass" the block? Explain.
1 antibiotics can kill gram-negative bacteria but symptoms of fever and low blood pressure can persist. why?2 why is
Think about a mature megaspore mother cell containing twenty DNA molecules to answer the following questions concerning meiosis.
Assume you found your sibling's brother-in-law has had a sample submitted to the lab. This is a person you have never met, but that you know has been in trouble with the law.
The vocal, claw and hair genes of H. flebotomos all are on the same chromosome. The vocal gene is 15 cM to the left of the claw gene and the hair gene is 30 cM to the right of the claw gene.
What are halophile, thermoacidophile and methanogen archaebacteria?
what is the actual function of the supraspinatus muscle?
q1. 1. why are some fruits sweet and some sour whereas others have no specific taste?2. how does ripening of fruit
Carbon cycles through the ecosystem between the atmosphere, organisms (such as producers, herbivores, and carnivores), and decomposers.
Use the IRAC method and ensure that you have identified the case problem. Case analyses are extremely helpful in that an analysis teaches you how to read a case. You will always want a heading which gives the case name and its citation . The fact..
Which of the following does not occur during mitosis?
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