Why is there no consistency in the screening of newborns in the United States?
a. Each state independently decides which tests to include.
b. The March of Dimes only recommends 29 items for screening.
c. For some disorders, we do not screen because there is no way to remediate the defect.
d. Because there are simply too many.
Answer: a. Each state independently decides which tests to include.
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Parallel ? sheets differ from antiparallel ? sheets because:
A. neighboring amino acids are on one rather than both sides of the sheet. B. large aromatic groups are only allowed with parallel sheets. C. parallel sheets can form between a single polypeptide. D. the N-to-C orientation of all the ? strands are aligned. E. hydrogen bonds are crucial for stability.
Analysis of the number of target molecules in the original clinical specimen can be determined using which of the following molecular techniques?
a. Arbritary Primed PCR b. Peptide Nucleic Acid (PNA) FISH c. Nested PCR d. Quantitative PCR
Which of the following characterizes relatively K-selected populations?
A) offspring with good chances of survival B) many offspring per reproductive episode C) small offspring D) a high intrinsic rate of increase E) early parental reproduction
Which of the following statements about the lagging strand is false?
A) It builds in the opposite direction of the helix unwinding. B) It is where one would find Okazaki fragments. C) It synthesizes many RNA primers. D) It uses only one molecule of DNA polymerase I. E) It is a discontinuous process.