Extended Data Fig. 2: The Y chromosome has size-dependent effects on heterochromatin in trans.
From: Y chromosome toxicity does not contribute to sex-specific differences in longevity

Effect of Y chromosome length on the expression of the LacZ-based heterochromatin reporter In(3 L)BL1 in male Malpighian tubules. Representative pictures show LacZ’s expression in blue. Scale bars, 10 μm. n = number of tubules (at least 150 cells were counted by tubule). R2 from nonlinear regression, using a polynomial equation.