Essential Genetics 6th Edition by Daniel Hartl

تمرين 16

Emmer wheat (Triticum dicoccum) has a somatic chromosome number of 28, and rye (Secale cereale) has a somatic chromosome number of 14. Hybrids produced by crossing these cereal grasses have many characteristics intermediate between the parental species, but they are nearly sterile and unable to reproduce. How many chromosomes do the hybrids possess?