The Class Reptilia is a group of species that share a common ancestor, but does not include all of that

ancestor's descendants. It is therefore considered to be



a. monophyletic.
b. polyphyletic.
c. paraphyletic.
d. an outgroup.
e. a mosaic.


C

Biology & Microbiology

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The neutral subatomic particle is

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Adding acetyl groups makes genes accessible

to transcription by a. increasing the pH of the cell. b. making histones loosen their grip on the DNA molecule. c. modifying the nucleotides of the promoter region of the DNA molecule. d. enhancing the activity of RNA polymerase. e. enhancing the development of a DNA-RNA hybrid

Biology & Microbiology

Describe the alteration of five selected biomes by humans. How have different biomes been converted

for commercial or agricultural use? Of those selected, which has undergone the most extensive change? What will be an ideal response?

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One would predict that bacteria that lack the enzyme photolyase would be more sensitive to what kind of mutagen?

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Biology & Microbiology