What kind of weak bonds holds the two strands of DNA together?
A. Nitrogen bonds
B. Phosphate...
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One of the purposes of transcription is to produce a sequence of bases that
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Which is one example of a phenotypic change that is not genetic
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If a cell is placed into a hypertonic environment,what will happen to it ? a)it will shrink or shrivel b)nothing c)it will burst d) it will expand or enlarge
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Which of the following is the sl unit used to measure temperature a. kilogram b. liter c. meter d. kelvin
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