In sequencing a bacterial genome, a researcher notes that G is more common on the leading strand than the lagging strand. This is an example of what phenomenon?
What will be an ideal response?
ANS:
GC skew
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You are a doctor examining a patient's blood test results. The patient's T cell count is low, and T cells that are present are not well developed. You examine scans of the patient's thymus. It is underdeveloped, which means the T cells in the blood ______
(Select all correct answer options.) A. will be present in lower numbers because the thymus is where T cells are formed. B. will be present in lower numbers because the thymus is where T cells mature. C. will have not undergone selection against self-recognition, and the patient will be more susceptible to autoimmune diseases.
Earth's largest carbon reservoir is ____
a. the atmosphere c. seawater b. sediments and rocks d. living organisms
The combination of DNA and its associated proteins is a(n) ____
a. gene b. nucleolus c. centriole d. chromosome e. allele
If a person gets a shot of epinephrine, he or she almost immediately feels the effects (e.g., increased heart and breathing rates). If the same person gets a shot of a steroid hormone such as cortisone, there is no immediate response
What is the reason for this difference?