5. If both parents have the genotype Aa and if they produce a family of four children, the binomial expansion shows the probabilities of obtaining families of different phenotypic combinations as follows: 81/256 all A-; 108/256 34- laa; 54/256 24-: 2aa; 12/256 14-: 3aa, and 1/256 all aa. A sample was obtained of a large number of families consisting of four children in which both par- ents were known to be Aa. Do these data approximate the expected distribution? Complete the following table, calculate and answer the related questions Family ratios o- E CO E2 (O – E/E All A- 1447 34-1aa 1978 2A-:2aa 963 206 All aa 14 Totals 37