Question

1. it is thought that all the genes that belong to an organism are found in the nucleus of each cell no matter what the cell type; therefore,—

there is a different set of dna in each of the different cell types
cell differentiation is determined by the nucleoplasm
ribonucleic acid creates a different complimentary strand depending on the cell type
cell differentiation is determined by the expression of only specific genes
clear all

Explanation:

The question is about gene expression and cell differentiation. All cells in an organism have the same DNA (genes), but different cell types result from the expression of specific genes (cell differentiation is determined by the expression of only specific genes). The other options are incorrect: the first option is wrong as all cells have the same DNA; the second option is about RNA which is not the main point here; the third option is incorrect as cell differentiation is not determined by nucleoplasm.

Answer:

cell differentiation is determined by the expression of only specific genes