Multicellular organisms are made up of different types of differentiated cells. Given that all cells in an organism have the same DNA—and thus the same genes—explain how it is that different genes can be expressed only in certain types of cells.

He used pea plants to study the patterns of heredity.

Hello there.identify what structures in a skeletal muscle will shorten in length during contraction of the muscle. choose all that apply. (0.5 pts)answers: muscle fiber

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