Variegated Four O'clock Leaves Have White Patches Among the Green

Question

Variegated four o'clock leaves have white patches among the green areas due to
A)the presence of cells in which most of the mitochondria have a mutation that blocks electron transport.
B)the presence of cells in which most of the chloroplasts have a mutation that prevents synthesis of chlorophyll.
C)an incompletely penetrant mutation in a nuclear gene that prevents production of chlorophyll.
D)a recessive mutation in a nuclear gene that results in a defect in ribosomes.

Accepted Answer

The white patches on variegated four o'clock leaves are due to cells that contain chloroplasts with mutations preventing the synthesis of chlorophyll, which is necessary for the green coloration in plants.