Fig. 3. Ploidy in CAF-1 mutant seedlings. Seedlings were grown as described for Fig. 2 or exposed to LD conditions for 9 days. (A) Ploidy was measured for seedlings grown under LD photoperiods. (B) Ploidy was measured for etiolated CAF-1 seedlings. For three to four independent preparations, areas of 2C (white), 4C (light gray), 8C (dark gray) and 16C peaks (black bars) were averaged. For all measurements, the s.d. was smaller than 4%.