Natural selection results in ____
a. adaptation
b. mutations
c. new species
d. genetic drift
e. gene flow
ANSWER: a
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The specific compound that is capable of receiving light energy as the first step in sensory transduction is
A. retinal. B. rhodopsin. C. cone opsin. D. vitamin A. E. melanin.
Which embryonic tissue is incorrectly associated with its derivative?
a. skin from mesoderm b. nervous system from ectoderm c. liver from endoderm d. circulatory system from mesoderm e. respiratory tract from endoderm
A community includes both living and nonliving components
Indicate whether the statement is true or false
The cloning of Dolly the sheep
A) demonstrated that the nuclei from differentiated mammalian cells can retain their full genetic potential. B) demonstrated that differentiated cells contain only a fraction of their full genetic potential. C) demonstrated, for the first time, that eggs are haploid and body cells are diploid. D) revealed that cloned mammals most resemble the egg donor.