Natural variation provided the phenotypes that natural selection then acted on, over time causing evolution
Answer:
Been brought about by the cell theory announced by Theodor Schwann and Matthias Schleiden in 1838, whereby cells were held to be the basic units of all living tissues. Improvements in the microscope during the 19th century made it possible gradually to lay bare the basic structures of cells.
Explanation:
The complementary DNA strand would be TAGCCATGT.
Hello,
The answer is for sure <span>A. O horizon</span>.Positive.
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