In Agarose Gel Electrophoresis, DNA Molecules Move Toward the ____

question 21

Multiple Choice

In agarose gel electrophoresis, DNA molecules move toward the ____ pole because they ____.

• A) positive; are negatively charged
• B) negative; are positively charged
• C) bottom; are pulled by a magnetic force
• D) bottom; are pulled by gravity
• E) bottom; have a greater density than the gel

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Definitions:

Fetus

A developing mammal or human from the end of the embryonic stage (usually from nine weeks after fertilization) to birth.

Blastocyst

A stage of embryonic development characterized by a fluid-filled structure formed about 5-6 days after fertilization, preceding implantation in the uterine wall.

Nutrient Exchange

The transfer of nutrients from the mother to the fetus during pregnancy, essential for fetal development.

Ovum

A mature female reproductive cell, especially of a human or other animal, which can fuse with a male gamete in sexual reproduction.