The Meselson-Stahl experiment demonstrated that DNA replication is semiconservative. In the figure, semiconservative replication is illustrated by Question 8 options: A) A mix of these methods, depending on the cell type B) B C) A D) C

Which prevent errors in dna replication? a. helicase enzyme checks the dna for errors. b. each base can attach to only one other type of base. c. ribosome enzymes prevent errors from happening. d. dna contains no complementary base pairs.

Construct at least two possible hypotheses for the student’s experiment.

Which of the following human activities resulted in the growth of the north american deer population?