In mammals, the majority of cardiomyocytes (cardiac muscle cells) undergo repeated DNA replication without cytokinesis as a part of normal development, and in response to injury or heart attack. Many cardiomyocytes are tetraploid, and some cells have even higher DNA content. This variation in DNA content is an example of
A. alloploidy.
B. aneuploidy.
C. endopolyploidy.
D. copy number variation.
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