Suppose a three-point testcross was conducted involving genes X, Y, and Z. If the most abundant classes of progeny are X Y z and x y Z and the rarest classes are x Y Z and X y z, which gene is in the middle?
A) X
B) Y
C) Z
D) cannot be determined
B) Y
Biology & Microbiology
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Which of the following causes a noncommunicable pulmonary infection that resembles tuberculosis?
A. Mycobacterium kansasii B. Mycobacterium fortuitum complex C. Mycobacterium scrofulaceum D. Mycobacterium avium complex (MAC) E. Mycobacterium marinum
Biology & Microbiology
The first site of starch breakdown in the digestive system is
A. the esophagus. B. the mouth. C. in the small intestines. D. in the stomach.
Biology & Microbiology
Demographics include __________ and __________
structure, such as the size of the __________ base. Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Which enzyme is matched correctly with the substance it digests?
a. pancreatic amylase: fats b. pepsin: proteins c. salivary amylase: fats d. trypsin: fats
Biology & Microbiology