Computer programs for reconstructing phylogenies:
a. check all possible trees.
b. only check a very small fraction of possible trees.
c. make phylogenetic inference easy and certain.
d. None of the above.
B
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Two organisms containing identical GC ratios are not necessarily related
Indicate whether the statement is true or false.
Cytokinins are water-soluble hormones produced in the root apical meristem and stimulate the growth of lateral buds. How do cytokinins reach the lateral buds?
A. by diffusion as a gas B. through the phloem C. through the xylem D. through the phloem and xylem E. through the phloem and by diffusion as a gas
Which of the following is NOT true of the
poouli? a. It is a honeycreeper. b. It is endangered. c. It is an outlying member of its group. d. It is morphologically distinct from others in its group. e. All of these are true
Where does the digestion of proteins begin in humans?
a. in the stomach b. in the small intestines c. in the pancreas d. in the large intestine