The nuances of eye color arise from
A) the numbers of rods and cones in the retina.
B) multiple alleles of at least 10 genes.
C) the way pigments are deposited in the iris.
D) how much vitamin A is in a person's diet.
C
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Which region of the spinal cord carries nerve impulses for proprioception?
a) Posterior white column b) Anterior gray horn c) Anterior white column d) Lateral white column e) Dermatome tract
What four major brain structures are included in the limbic system? Where is it located in the vertebrate brain? What does the limbic system do?
What will be an ideal response?
The tetany that is seen in lockjaw is the same as the tetany produced by hypocalcemia.
a. true b. false
A cell or organ that responds to the directions of the control center in a negative feedback loop is termed a(n):
A) effector. B) regulator. C) receptor. D) stimulus.