Expression pattern of the maize PcG genes. RT-PCR
was performed on RNA isolated from various maize tissues to determine
the expression patterns of the maize PcG genes. The sequence amplified
is indicated on the left, and the source of the RNA for each lane is
indicated above the pictures (1, blank; 2, endosperm (11 DAP); 3, whole
kernel (3 DAP); 4, whole kernel (11 DAP); 5, 10-d-old seedling; 6, root
tips; 7, immature leaf; 8, mature leaf; and 9, meiotic tassel).