Biology
Biology, 17.12.2020 01:30, jaffeisabel

A multicellular organism develops from a zygote that undergoes both cell division and differentiation as it grows into an adult what explains the fact that cells are able to differentiate into adult cells with different structures and functions even though they all have the same DNA? A. External and internal cues trigger different genes to turn on and off in different cells
B. The cell nucleus controls the expression of genes based on a pre-determined sequence
C. Chromosomes are keyed to be expressed only in some cells but not in others
D. Cells randomly express different genes during development

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