Reproductive Cloning of Human Embryos Is Generally Considered Unethical

question 24

Multiple Choice

Reproductive cloning of human embryos is generally considered unethical. However, on the subject of therapeutic cloning, there is a wider divergence of opinion. Which of the following statements provides a likely explanation?

• A) The use of adult stem cells is likely to produce more cell types than the use of embryonic stem cells.
• B) Cloning to produce embryonic stem cells may lead to great medical benefits for many.
• C) Cloning to produce stem cells relies on a different initial procedure than reproductive cloning.
• D) A clone that lives until the blastocyst stage does not yet have human DNA.

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Definitions:

Ellipse

A curve on a plane that surrounds two focal points such that the sum of the distances to the two focal points is constant for every point on the curve.

Major Axis

The longest diameter of an ellipse, running through its center and both foci.

Vertices

Vertices are the corner points where two or more lines, edges, or curves meet in a geometric shape or figure.

Co-vertices

In an ellipse, the pair of points on the minor axis that are equidistant from the center.