animal

20. P2 and P4 are bacteriophages of E. coli. They have the following properties: (1) When P2 phage infects a bacterium, the bacterium eventually bursts, yielding about 100 P2 progeny. (2) When P4 infects a bacterium, the bacterium survives because P4 is a defective phage. (3) When P2 phage and P4 phage coinfect the same bacterium, lysis of the bacterium yields 100 P4 progeny and no P2 progeny, because the presence of P4 inhibits the growth of P2. Suppose 3 x 108 P2 and 2 x 108 P4 are added to 108 bacterial cells. How many bacterial cells will produce P2 progeny? A. 1.28 x 107 В. 6.75 х 105 С. 5.00 х 106 D. 2.56 x 107 E. 3.23 x 104

Suppose you have a drug that specifically inhibits telomerase. You administer the drug to mice. Which of the following outcomes might reasonably be expected?

What is it? Leading chain Ligase procedure Replication fork structure that may participate in translation The lagging chain

In your experiment there will be 4 different experimental samples labeled A-D (please see Table 3 on page 12 of the Lab 4 handout). If you saw no bacterial colonies growing in sample A (pLZDonor, no arabinose), what would this tell you? Group of answer choices the bacteria has been successfully edited to include the donor template DNA the sgRNA caused a double-strand DNA break which caused the bacteria to die the DNA transformation was not successful there is functional lacZ in this sample

What is chimera in recombinant dna How we can make chimeric gene Is chimeric gene is related to gmo and how we can relate to recombinant dna

4. Name 2 techniques used in physical maps? 5. List 2 differences between sickle cell and b-thalassemia disorders? 6. List 2 differences between inducible and repressor operon?

Question 4 Why is CRISPR useful for genome editing? it can't be used in humans, but it works really well in most microbes it creates really long sticky ends that improve the efficiency of creating the correct plasmid it is being used to provide immunity to viruses in humans O it can direct DNA cutting to any specific sequence

What advantageous uses have viruses been shown to have? The activities of viral genes mimic those of host genes so they are useful for studying mechanisms of DNA replication and gene expression in their much more complex hosts. O Bacteria-killing viruses may play an increasing role in the war against bacterial pathogens. O All are correct. They can be used as a means to introduce foreign genes into human cells, which may serve as a basis for treatment of human diseases by gene therapy. O Insect-killing viruses may play an increasing role in the war against insect pests.

Which of the following mutagens results in the deamination of nitrogenous bases? nitrous acid base analogue aflatoxin intercalating agent