Most genetic variation in populations is:
A. obvious.
B. beneficial.
C. harmful.
D. deleterious.
E. neutral.
E
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Lateral inhibition via amacrine cells in the mammalian retina _____
A) underlies habituation of vision B) enhances visual contrast C) prevents bleaching in bright light D) is required for color vision to occur E) recycles neurotransmitter molecules
SINEs in molecular phylogenetics are
a. Substituted Integrated Elements. b. Short Interspersed Elements. c. Single Insertion Elements. d. Smart Innovative Entrepreneurs. e. Species Inter-related Elements.
The accompanying figure shows a cross-section through the vascular cylinder of a(n) ____
a. monocot stem b. eudicot stem c. monocot root d. eudicot root e. eudicot leaf vein
Which of the following apply to the demography of human populations today? (Check all that apply.)A) Our ecological footprint is decreasing.B) We are using distributed resources disproportionately-less than 20% of us use over 80% of the energy.C) We have plenty of resources still untouched.D) We use almost half of the Earth's land.E) We use over half of all renewable fresh water sources.
What will be an ideal response?