A scientist who studies the influence of microbes in the formation of caves is called a(n) ________.
A. geomicrobiologist
B. immunologist
C. astrobiologist
D. epidemiologist
Answer: A
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The spectrophotometer in this exercise measures ________
a. color and intensity. b. neither color nor intensity. c. color only. d. intensity only.
Which of the following describe both tunicates
and lancelets?
a. invertebrates b. chordates c. gill slits d. notochords in the larvae e. all of these describe both tunicates and lancelets
Which of the following is NOT a known effect
in the expression of Marfan syndrome? a. lanky, loose jointed skeleton b. weakened blood vessels c. calcium deposits in aorta d. excessive absorption of oxygen causing the blood cells to swell e. skin becomes inelastic
You are a forensic technician working on a DNA sample obtained from a crime scene. Your job is to compare the unknown DNA sample with known DNA samples collected from five different suspects. Preliminary analysis using only a few DNA markers revealed that the unknown sample could possibly match two of the suspects. After consulting the case file, you find out that these two suspects are brothers (but not twins). You realize that you will have to do a more detailed analysis on the samples so that you can distinguish between the brothers and determine which brothers' DNA matches the unknown sample.Why can't you use mitochondrial DNA to distinguish between these two suspects?
A. There are no molecular techniques available that allow one to analyze mitochondrial DNA. B. The sequence of mitochondrial DNA has not yet been determined. C. The brothers share the same mitochondrial DNA. D. Because mitochondrial DNA is inherited in a paternal pattern.