Within a Differentiated B Cell, the Rearrangement of DNA Sequences

question 84

Multiple Choice

Within a differentiated B cell, the rearrangement of DNA sequences between variable regions and joining regions is accomplished by

• A) polyadenylase.
• B) RNA polymerase.
• C) reverse transcriptase.
• D) epitopase.
• E) recombinase.

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Definitions:

Gestational Age

The age of an embryo or fetus calculated from the first day of the last menstrual period of the pregnant individual, usually measured in weeks.

Airway

The passageway by which air enters and exits the lungs, essential for breathing; obstruction or compromise can be life-threatening.

Parent-newborn Physical Contact

The direct skin-to-skin touch between a parent and their newborn baby, important for bonding and emotional development.

Cyanosis

Bluish discoloration of the skin and mucous membranes caused by an excess of deoxygenated hemoglobin in the blood or a structural defect in the hemoglobin molecule.