In the plots below, we see reaction norms for four traits for two different strains of the plant Mimulus guttatus. Strain A is shown as a star and strain B as a circle. The x-axis represents two temperatures, cold and hot, and the y-axis is the value of the phenotype. Which traits show effects of both genotype and environment?
1) age at maturity and leaf size
2) leaf size and leaf number
3) age at maturity and height
4) leaf number only