Height and weight are two quantitative traits in humans. Monozygotic (identical) twins reared together differ on average by 1.7 cm in height, while those reared apart differ by 1.8 cm. Monozygotic twins reared together differ on average by 1.9 kg in weight, while those reared apart differ by 4.5 kg. What does this information tell you about VE and VG for these two traits?