You Briefly Expose Bacteria Undergoing DNA Replication to Radioactively Labelled

question 34

Multiple Choice

You briefly expose bacteria undergoing DNA replication to radioactively labelled nucleotides. When you centrifuge the DNA isolated from the bacteria, the DNA separates into two classes. One class of labelled DNA includes very large molecules (thousands or even millions of nucleotides long) , and the other includes short stretches of DNA (several hundred to a few thousand nucleotides in length) . Which two classes of DNA do these different samples represent?

• A) leading strands and Okazaki fragments
• B) lagging strands and Okazaki fragments
• C) Okazaki fragments and RNA primers
• D) leading strands and RNA primers

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Definitions:

Two-sample Chi-square

The Two-sample Chi-square test is a statistical method used to determine if there is a significant difference between the distributions of two categorical variables.

Expected Values

The predicted value of a variable, computed as a weighted average of all possible values.

Observed Values

The actual measurements or data points collected from an experiment or study, as opposed to theoretical predictions or estimates.

Test of Independence

An analytical method designed to assess if a significant link exists between two categorical variables.