Donn and Sabine have three children: identical twin sons (Gerard and Gerome) and a daughter (Eliza). To which
family member would Gerard's MHC genes be the most similar?
a. Donn
b. Sabine
c. Eliza
d. Gerome
e. Gerome, Eliza, and Gerard have identical MHC genes
ANSWER: d
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Each chromosome has one or more ________ site(s) where replication begins.
A. bifurcate B. origin C. promoter D. replicon
As an undergraduate research assistant, you are given a genetic mapping project. You are told that genes a and b are
7.4 map units from each other and that genes b and c are 5.7 map units from each other. You perform a testcross to determine the map distance between a and c. Which of the following results would indicate that c lies between a and b?
a. 11.1 map units b. 15.0 map units c. 2.0 map units d. 14.8 map units e. 13.1 map units
Which of the following must occur in order for a photon to excite an electron in a pigment molecule?
a. The photon must match the energy difference between the ground state and one of the excited states. b. The photon must have lower energy than the electron at the ground state. c. The photon must have lower energy than the energy of the electron at the excited state. d. The photon must have higher energy than the electron at the ground state.
What is likely to be the greatest challenge facing the zoned reserve systems of Costa Rica?
A) high predation by jaguars B) the impossibility of ecotourism C) decreasing soil erosion D) a growing human population