A storm strips an island in Lake Superior down to bare rock. The first organisms to recolonize the island are most likely

A) blueberries. B) balsam firs. C) junipers. D) yarrow. E) lichens.


E

Biology & Microbiology

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The Drosophila homeotic genes typically contain the homeobox. The homeobox is a sequence of 180 nucleotides. The number of amino acids coded for by this sequence is  

A.  30. B.  60. C.  90. D.  120 E.  180.

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Sea lions and seals belong to the suborder:

a. Carnivora. b. Sirenia. c. Cetacea. d. Pinnipedia. e. Odontoceti.

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Photosynthetic organisms using the oxygenreleasing

pathway appeared on earth about ____ billion years ago.

a. 1.3 b. 1.8 c. 2.3 d. 2.7 e. 3.8

Biology & Microbiology

The most common form of eye cancer is ____

a. conjunctivitis b. malignant melanoma c. retinoblastoma d. macular degeneration e. glaucoma

Biology & Microbiology