The aspect of human evolution in which the genes microcephalin and ASPM have been implicated is the
A. evolution of an opposable thumb.
B. evolution of our large frontal cortex.
C. evolution of bipedal locomotion (walking upright).
D. the evolution of mother-infant bonding.
E. evolution of language.
Answer: B
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When did the Earth's crust form?
a. 2.9 billion years ago b. 3.2 billion years ago c. 4,600 million years ago d. 4.6 thousand years ago e. 12,000 years ago
The primary structure of a protein
A) is important for determining the secondary and tertiary structure of a protein. B) is simply the order of amino acids from one end of the protein to another. C) is important both genetically and structurally. D) is the linear sequence of amino acids that are linked together by peptide bonds. E) All of these statements are true.
In bacteria, which protein complexes with aminoacyl-tRNAs and GTP to bind to the ribosomal A site?
a. EF-Tu b. eIF2 c. IF-2 d. EF-Ts e. EF-G