What are some of the changing things in our current world that the author claims we are not well adapted to yet?
A. Computer screens
B. Junk food
C. Sterile environments
D. 24 hour schedules
E. None of the above (A-D)
F. Some of the above (A-D)
Answer:
A. Computer screens
B. Junk food
C. Sterile environments
D. 24 hour schedules
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Which of the following is NOT a morphogen?
A. activin B. noggin C. Wnt D. cadherin E. protein produced by Spemann's organizer (dorsal lip of a gastrula)
The specific function of a protein is determined by the
A) number of peptide bonds it contains. B) exact sequence of amino acids. C) fatty acids that are joined together in the polypeptide. D) number of disulfide bonds. E) hydrophilic head attached to the hydrophobic tail.
If a test cross is performed involving 3 linked genes (A,B and C), the most frequent phenotypes of the offspring are "Abc" and "aBC" and the least common offspring are "abc" and "ABC". What was the genotype in the correct order of the heterozygous individual used in this test cross?
a) Abc/aBC b) BAC/bac c) bcA/BCa d) bAc/BaC
The root hairs develop in the zone of elongation.
Answer the following statement true (T) or false (F)