When male turkeys inseminate chicken embryos, both female and male embryos are formed. Sadly, the males often die during the stages of their development because they are less viable than the females.
Turkeys and chickens are classified as two different species, and they should not be cross-bred. However, this will not stop a male turkey from trying to mate with hens of the other species, and they are reported to attempt it often.
There are too many factors that prove that you should separate these two species if you witness them in the act. They are just not compatible, from physical size to genetic composition.