You are attempting to link an individual to a crime. The only evidence you have is a tiny drop of blood. How can you use this drop of blood to definitively make the association?
A) You can use the sample to determine the individual's blood type.
B) You can use gel electrophoresis to determine the length of the DNA found in the sample.
C) You can use PCR to increase the amount of DNA available for STR analysis.
D) You can use the sample to check for the presence of the Rhesus factor.
C
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Thymidine dimers cannot be repaired in humans by which of the following?
A. nucleotide excision repair (NER) B. transcription-coupled repair (TCR) C. translesion synthesis (TLS) using Pol ? D. photoreactivation E. All of the choices given can be used to repair thymidine dimers in human cells.
Which of the following pairs is incorrectly matched for cells and the molecules they secrete?
A. Neutrophils; heparin B. Basophils; heparin C. Mast cells; histamine D. Natural killer cells; toxic chemicals E. Eosinophils; toxic chemicals
Which of the indicated structures is absent in people suffering from Duchenne muscular dystrophy?
1.A
2.B
3.C
4.D
Succession that occurs on abandoned agricultural fields is best described as
A. secondary succession. B. primary succession. C. prairie succession. D. biome succession.