The study of how gene expression is turned on and off and which considers the interactions between DNA, RNA, proteins, and the environment is called

epigenetics

Explanation:

answer; i believe the correct answer is (data); /// good luck

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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