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the cavity used for transport purposes. It has one opening to the environment through which ingestion and digestion both take place.
coiled thread-like structures of DNA and histone, which is a protein, in the cell nucleus. They...
the first part of the mammalian small intestine.
supporting cells in nerve tissue.
in plants: the structure within a seed that will develop into the new plant.
processes used to create copies of DNA fragments (usually genes), cells or organisms to create...