Sexual selection, such as occurs when males compete for access to fertile females, frequently influences aspects of body form and can lead to _____
a. male/female differences
b. male aggression
c. exaggerated traits
d. all of these
D
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Elucidation of the histone code might
A. allow us to turn specific genes on or off. B. allow the determination of nucleosome composition. C. lead to chromatin remodeling. D. allow us to control translation.
The mesophyll layer of leaves is important to plants because
A. it keeps the plant from drying out. B. it anchors the plant to the soil. C. most of the photosynthesis occurs here. D. most of the water needed for photosynthesis is absorbed here.
Which of the following can affect a small, endangered population so severely that it goes extinct?
A) Lost alleles and/or low genetic diversity B) Increased mating opportunities C) Sexual selection D) Artificially adding new genes E) Matings with a closely related species
Compare and contrast the physiological effects of steroid use to increase and improve performance in both genders
What will be an ideal response?