Most sexually reproducing species have an even chromosome copy number, but the dog rose does not. What explains its unusual pattern of chromosome inheritance? Joiselle B. Fernandes is in the ...

Some years ago my dog, Lola, had a litter of puppies, and my son has one of them, Ivy. When we are out with both dogs, if we tell Ivy off, Lola will “tell her off” too, trying to grab her by the ...