Why is SRY considered to be a master gene? What will be an ideal response?
ANSWER: SRY is one of 78 genes found on the Y chromosome. It is responsible for the development of
testes, the products of which produce male secondary sexual characteristics. If the SRY gene
is mutated, the developing embryo will appear female and develop female sexual features;
therefore, SRY is the master gene for male sexual traits.
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Which of the following molecules act as building blocks (monomers) of polypeptides?
A) 1, 4, and 6 B) 2, 7, and 8 C) 7, 8, and 13 D) 11, 12, and 13 E) 12, 13, and 15
Which of the following is recommended by the Standard Precautions guidelines?
A. Glove use B. Hand washing C. A face shield D. Antibiotic use E. Glove use, hand washing, AND a face shield
Which of the following is evidence that the
continents are not static?
a. the jigsaw puzzle fit of continents like South America and Africa b. fossils occur in identical rock formations on both sides of the Atlantic Ocean c. magnetic poles of large rock formations point in different directions d. at certain places beneath the ocean, the sea floor is spreading e. all of these are evidence that the continents are not static
What is the microtubule arrangement of a flagellum or cilium?
a. 9 x1 array b. 9 + 1 array c. 9 x 3 structure d. 9 + 2 arrangement e. 9 + 3 arrangement