Table 2. Statistics from parent-offspring regressions.

Variable	Heritability (± s.e.)	R 2	F	q-value
Shell length	0.429 (± 0.139)	0.142	9.57	0.008
Shell width	0.030 (± 0.110)	0.001	0.07	0.845
Aperture length	0.023 (± 0.145)	0.000	0.03	0.875
Aperture width	0.055 (± 0.148)	0.002	0.14	0.832
Body whorl length	0.321 (± 0.147)	0.076	4.78	0.058
Penult. whorl width	0.401 (± 0.121)	0.159	10.98	0.007
PC1 (correlation)	0.157 (± 0.149)	0.019	1.11	0.377
PC2 (correlation)	0.308 (± 0.069)	0.253	19.68	0.005
PC1 (covariance)	0.253 (± 0.148)	0.048	2.94	0.143
PC2 (covariance)	0.314 (± 0.050)	0.404	39.35	0.005
RWA1	0.819 (± 0.073)	0.685	126.0	0.005
RWA2	0.312 (± 0.123)	0.102	6.58	0.026
RWA3	-0.618 (± 0.464)	0.030	1.78	0.263
Centroid size	0.384 (± 0.144)	0.110	7.15	0.023

Significance of the regression is estimated by q-value [51], adjusted for N = 14 comparisons.