Modern Cloning Techniques Have Demonstrated That the Vast Majority of Differentiated

question 4

Multiple Choice

Modern cloning techniques have demonstrated that the vast majority of differentiated cells are genetically equivalent to developing cells in the embryo.What is an exception to this finding?

• A)Nerve cells are often limited in their mitotic activity.
• B)In the immune system,sequences of DNA may rearrange to permit response to new pathogens.
• C)In the brain,DNA sequences may change with learned behavior.
• D)The lining of the digestive system is frequently replaced.Some of these cells may show repeats of certain DNA sequences.

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Definitions:

Arm

The upper limb of the human body, extending from the shoulder to the hand.

Leg

The leg is the part of the lower limb in humans between the knee and the ankle, comprising bones, muscles, blood vessels, and nerves that support locomotion and weight bearing.

Villonodular Synovitis

Villonodular synovitis is an uncommon joint disorder characterized by swelling and overgrowth of the joint lining, often affecting the knee or hip.

Left Shoulder

The upper joint of the human body on the left side, connecting the left arm to the torso.