Any differences between identical twins must be due to their a. nature. b. heredity. c. genetic makeup. d. environment.

C. genetic makeup

EXPLANATION:

Twins may seem, by all accounts, to be basically the same, however, their genes reveal a different pattern

The study tells us that at times, one twin's DNA contrasted from the other's at different focuses on their genomes. At these destinations of hereditary difference, one bore an alternate number of duplicates of a similar quality, a hereditary state called duplicate number variations

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