Which of the following is responsible for the actual invasion of the lining of the uterus?
a. trophoblast
b. amnion
c. inner cell mass
d. blastocyst
e. placenta
D
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How big are most cells?
a. 10-20 nanometers b. 10-20 micrometers c. 10-20 millimeters d. 10-20 centimeters e. 10-20 meters
____ discovered the basis for the ____ rule, which states that the amounts of adenine and thymine are identical, as are
the amounts of cytosine and guanine.
a. Avery; base-pair b. Griffith, double helix c. Chargaff; base-pair d. Chase; double helix e. Pauling; base-pair
Sister chromatids are separated from each other
during a. metaphase I. b. anaphase I. c. telophase II. d. anaphase II. e. metaphase II.
The most common forms of color blindness result in the inability to properly perceive the colors
____________________ and ____________________. Fill in the blank(s) with the appropriate word(s).