Biology Question Help [Genetic Diagram]Watch
or is neither of them correct?
or did I miss something that I would have to add?
Thanks for your help
well, polydactyl is caused by a dominant allele as it states in the question. According to ur diagram, both of them have the D genotype. That would mean that they are both effected, however the family tree shows that they done. Therefore the unaffected one would have to be dd, not Dd.
From your diagram, the chance of getting poly-dactyl is 75%, but only 2 of the offspring got poly-dactyl. However in my diagram, it's 50/50 chance of getting poly-dactyl, and exactly half of the offspring got poly-dactyl and the others done.