Fig. 4. Scaling power estimations for bulk nuclear DNA and gene copy numbers in nurse cells.

a–c) Log-log plots for genome polyploidy equivalent (a), bcd gene copy number (b) or nos gene copy number (c), against nurse cell nuclear diameter. Solid line is linear fit, with scaling power, 95% CI and R² shown. Inset shows fitting of data from individual lines. For WT (shown in black), n₀ = 2.42 ± 0.09, R² = 0.91; n₁bcd = 2.82 ± 0.20, R² = 0.80; n₁nos = 2.83 ± 0.22, R² = 0.76. For the large-egg line (shown in blue): n₀ = 2.27 ± 0.23, R² = 0.67; n₁bcd = 3.10 ± 0.31, R² = 0.67; n₁nos = 2.79 ± 0.44, R² = 0.45. For the small-egg line (shown in red): n₀ = 2.50 ± 0.27, R² = 0.74; n₁bcd = 2.93 ± 0.45, R² = 0.60; n₁nos = 3.14 ± 0.43, R² = 0.78.