Pregnant mothers are collected. One offspring from each mother is randomly selected and its genotype determined. In addition, the genotypes of a random sample of non-reproductive (``sterile'') females and adult males are determined. The data can be summarized as follows:
| Offspring | ||||||
| Mother | ``Sterile'' Females | Males | ||||
| -- | ||||||
| -- | ||||||
| Total | ||||||
Given the total sample size for mother-offspring pairs, ``sterile'' females, and males, how many free parameters are there? How many frequencies would we need to know to reproduce the data?
| 6 | for mother-offspring pairs |
| 2 | for ``sterile'' females |
| 2 | for males |
| 10 | total |