Answer:
.50
Step-by-step explanation:
If the correlation between the shyness of a sample of dizygotic twin pairs is .25 and the correlation between the shyness of a sample of monozygotic twin pairs is .50, then the heritability coefficient for shyness is 0.50.
Correlation explains the mutual relationship between two or more things. It is positive when their values increase together and are negative when one value increases as the other decreases.