Two individuals are tested for a particular allele and one has it. In the above case where

Question:

Two individuals are tested for a particular allele and one has it.
In the above case where a very small number of individuals is tested for an allele, find and graph the likelihood function for the proportion p of individuals in the whole population with this allele, find the maximum likelihood estimator, and make sense of the likelihood at p = 0 and p = 1.