Which of the Following Modifications Is Most Likely to Alter

question 14

Multiple Choice

Which of the following modifications is most likely to alter the rate at which a DNA fragment moves through a gel during electrophoresis?

• A)altering the nucleotide sequence of the DNA fragment without adding or removing nucleotides
• B)radioactively labeling the cytosine bases within the DNA fragment
• C)increasing the length of the DNA fragment
• D)leaving the length of the DNA fragment the same

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Definitions:

Serosa

A smooth membrane consisting of mesothelial cells, covering the exterior of abdominal organs and lining the cavity they reside in.

Submucosa

The layer of dense irregular connective tissue or fibrous connective tissue beneath the mucosa layer, supporting it and connecting it to other tissues.

Parietal Cells

Cells in the lining of the stomach that produce hydrochloric acid and intrinsic factor, crucial for digestion and B12 absorption.

Serous Cells

Gland cells that produce a watery, protein-rich fluid, playing key roles in lubrication and protection in various organs and cavities of the body.