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18, A _____________________________________ is an inherited physical characteristic. 19, A ____________________ ___________________ (two words) is a...
18, A _____________________________________ is an inherited physical characteristic.
19, A ____________________ ___________________ (two words) is a structure that binds the nucleus within the cell.
21,A(n) _________________________________ is a structure found in the cell that contains the chromosomes or, more precisely, the DNA.