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What process is responsible for position effect variegation? A. Inactivation of a gene due to deletion B. Activation of a gene by an enhancer C. Gene duplication D. Inactivation of a gene due to its incorporation in a heterochromatic region of the chromosome.
Determine what functional adaptation does cartilage have over bone in making up the external framework of the nose?
Some malignant tumors remain localized and encapsulated, at least for a time; an illustration is carcinoma in situ in the ovary or breast. Share your thoughts to describe this phenomenon.
Discuss how a myocardial infarction could occur and explain how drugs, angioplasty and coronary bypass can help the patient.
Many scientists were reluctant to accept the results of Avery, MacLeod, and McCarty's experiments showing that DNA (rather than protein) was the transforming principle. Why?
An analyzer is studying a gene that codes for a very small polypeptide phe his gly cys gly. He treated the cells with different mutagens with the results to the protein.
Motor proteins use the energy in ATP to transport organelles, rearrange elemts of cytoskeleton during cell migration, and move chromosomes during cell division. Which of the following mechanisms is sufficient to ensure the unidirectional movement ..
A wild cherry tree has 5 pairs of chromosomes in its nucleus found in a cell in the vascular cambium. How many linear DNA strands would be located in each of the megaspores found in the flower from the wild cherry tree?
When viewed under a microscope, healthy red blood cells appear flattened, circular and biconcave. They appear pink on the outside but have a whitish center. Why does their center appear white?
How is it possible for a change in a single amino acid in a protein of 1000 amino acids to destroy its function, even when that amino acid is far away from any binding site?
What is acute and convalescent sera? If the titer of the convalescent serum is much grater than the acute serum, what does that indicated
Assume that, during biological research, it became possible to incorporate fully functional chloroplasts into the basal layer of our epidermal skin cells. Knowing the structure and function of chloroplasts, how will this influence our body.
describe boyle's law and how inhalation and exhalation follow from this law. identify the muscles involved in quiet inhalation and those additionally required for forced inhalation. Which spirometry measurements indicate the extent of quiet and fo..
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