Correlations coefficients (r) for height were determined for 25
pairs of individuals with the following genetic
relationships:                     

                                                                                   
r_observed          
r_expected

Mother/daughter:   
                                               
0.15                           
______

Mother/granddaughter:
                                         
0.09                           
______

Mother/great
granddaughter:                                
0.04                           
______

What is the overall average narrow-sense heritability for height
in this group of females and what does it suggest about the genetic
contribution to the phenotypic variance?

Please help me answer all of the folowing…