please show your work so I can follow and answer later questions on my own! Thank you! One form of inherited schizophrenia is a threshold trait controlled by 4 loci. Schizophrenia is expressed in individuals who have 7 or more contributing alleles. Based on DNA sequencing, the husband is Aa ; BB ; Cc ; Dd and the wife is Aa ; Bb ; CC; dd where a capital letter indicates a contributing allele. What is the probability that their second child will express schizophrenia? .