Which of the Following Has NOT Happened During the Evolution

question 61

Multiple Choice

Which of the following has NOT happened during the evolution of the galaxy?

• A)The abundance of heavy elements has increased
• B)The thickness of the galaxy has decreased.
• C)The galaxy has rotated many times
• D)The number of stars has dropped steadily

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Definitions:

Therapeutic Cloning

A technique for creating a clonal embryo using somatic cell nuclear transfer, primarily for the purpose of deriving stem cells to treat disease.

Pluripotent Stem

Cells capable of differentiating into almost any other cell type in the body, holding potential for regenerative medicine and developmental biology.

Genetic Identical

Organisms or cells that have exactly the same DNA sequence in all of their genes.

Totipotent

Cells that have the potential to develop into any cell type in an organism, including embryonic and extraembryonic tissues.