The polymerase chain reaction can be used for identification of
A. antibodies in the patient's serum.
B. microorganisms.
C. growth characteristics of microorganisms.
D. proteins.
Answer: B
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The human body has close to ____ muscles
a. 100 b. 206 c. 300 d. 500 e. 700
Describe the evolutionary relationships between the following organisms. Draw a family "tree" if
necessary. Include bony fish, amniotes, lizards, mammals, turtles, birds, reptiles, ray-finned fishes, amphibians, lungfish, and lobe-finned fishes. What will be an ideal response?
What is the correct order of steps of morphogenesis in Drosophila melanogaster?a. Gap genes divide the body into broad regionsb. Establishment of anterior / posterior axesc. Homeotic genes determine which body parts arise from each regiond. Pair-rule genes are activated in order to develop a preliminary segmentation pattern
A. a - b - c - d B. a - d - c - b C. a - d - b - c D. b - a - d - c E. b - a - c - d
The oldest fossils of eukaryotes have been estimated to be
A. 1995 years old. B. 4.5 billion years old. C. 1.5 billion years old. D. 6000 years old. E. 8 billion years old.