Dzo Dzo A dzo (Tibetan མཛོ་ mdzo) (also spelled zo, zho and dzho) is a hybrid between the yak and domestic cattle. The word dzo technically refers to a male hybrid, while a female is known as a "dzomo" or "zhom". In Mongolian it is called khainag (хайнаг). There is also the English language portmanteau term of yattle, a combination of the words yak and cattle, as well as yakow, a combination of the words yak and cow. Dzomo are fertile (or, fecund) while dzo are sterile. As they are a product of the hybrid genetic phenomenon of heterosis (hybrid vigor),
Which? supplement, which becomes "Motoring Which?" in 1965, followed by "Money Which?" in 1968. In 1970, "Which?" bought a set of buildings in Harpenden, Hertfordshire, to set up labs to test products including domestic appliances, DIY equipment, and consumer electronics. Previously, the work had been contracted out. The 1970s saw "Which?" taking a greater campaigning role, and it began to adopt a more aggressive stance on issues such as lead poisoning and aircraft noise. In 1971, for example, "Which?" published the first league table on the tar and nicotine content of cigarettes. The organisation also dabbled in high street consumer advice