Figure 8: Sperm performance and male fertility in F2 hybrids.
From: The genetic basis and fitness consequences of sperm midpiece size in deer mice
(a) Association between midpiece length and straight-line velocity of F2 hybrid males (linear regression: n=233 males, n=10 sperm/male). For reference, midpiece length of each parental species is plotted as a dashed line. (b) Mean±s.e. sperm midpiece length of F2 males that did (n=85) and did not (n=173) sire offspring (t-test). Note truncated y axis.
