A researcher adds an enzyme to a sample of human DNA to see if the
DNA changes. Which result would best support the conclusion that the
enzyme had no effect on the DNA?
.
A. The DNA has uracil bases.
B. The DNA has unpaired nitrogenous bases.
C. The DNA has a single strand with nucleotides and a sugar-phosphate backbone.
D. The DNA has a double helix shape with nucleotide pairs and sugar-phosphate
backbones.
Answers: 3
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Climate warming trends allow plant and insect species to inhabit larger ranges. select the best answer from the choices provided
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Ivan is looking at a cross section of a stem taken from a vascular plant. he sees two different types of vascular tissue: the xylem, which is closer to the center of the stem, and the phloem, located around the xylem, closer to the outside of the stem. how do these two structures work together in a living plant?
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Computer simulations are sometimes used to demonstrate the outcome of monohybrid fruit fly crosses, where a student can run generation after generation of fruit flies with 100 offspring produced each generation, half male and half female, and a 3-to-1 phenotype ratio (or 75 to 25) in the f1 generation. compared with real genetics results,
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A researcher adds an enzyme to a sample of human DNA to see if the
DNA changes. Which result would...
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