1 Let H be a random variable denoting the handedness of an individual x, with possible values l or r. A common hypothesis is that left- or right-handedness is inherited by a simple mechanism; that is, perhaps there is a gene Gx, also with values l or r, and perhaps actual handedness turns out mostly the same (with some probability s) as the gene an individual possesses. Furthermore, perhaps the gene itself is equally likely to be inherited from either of an individual’s parents, with a small nonzero probability m of a random mutation flipping the handedness.

a. Which of the three networks in Figure 20 claim that P(G father, Gmother, G child) P(Gfather)P(Gmother)P(G child)? = b. Which of the three networks make independence claims that are consistent with the hypothesis about the inheritance of handedness?