bobgardner765
bobgardner765
27.05.2020 • 
Biology

Hemoglobin protein is produced by red blood cells, but liver cells from the same organism do not produce hemoglobin protein. Why?

A.The gene for hemoglobin is missing in liver cells
B.the gene for hemoglobin is turned off in liver cells
C.The gene for hemoglobin has mutated in liver cells
D.The gene for hemoglobin is activated in liver cells

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