When minute samples of DNA need to be genetically analyzed for identification purposes, which test can be effectively used?
A. Weil-Felix reaction
B. Widal
C. PCR
D. Direct fluorescence antibody
E. Western Blot
Answer: C
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What is phytoremediation?
a. Replanting areas where tree populations have been killed by environmental contaminants. b. The use of bacteria to degrade environmental contaminants. c. Treating contaminated trees to remove their buildup of environmental contaminants. d. The use of plants to take up and concentrate or degrade environmental contaminants. e. Using fast growing plant species to enrich poor soil that resulted from environmental contaminants to improve fertility of the area.
The most common autosomal trisomy is
a. Turners syndrome. b. XXY (Klinefelter syndrome). c. Fragile X syndrome. d. trisomy 21 (Down syndrome).
The stage of the cell cycle during which the cytoplasm divides to form two cells is called:
A. G1 B. G2 C. S D. Mitosis E. Cytokinesis
Select the option that best completes the following statement: Nonhomologous endjoining is a process by which a double-stranded DNA end is joined ___________________
(a) to a similar stretch of sequence on the complementary chromosome. (b) after repairing any mismatches. (c) to the nearest available double-stranded DNA end. (d) after filling in any lost nucleotides, helping to maintain the integrity of the DNA sequence.