Lampbrush chromosomes of tailed and tailless amphibians, birds and insects are described best of all. The Fairey Delta 2 was a mid-wing tailless delta monoplane. These glands distinguish the true toads from all other tailless amphibians. There are concerns as to whether breeding hairless and tailless rats is ethical. Selective breeding of the tailless or short-tailed dogs has fixed the characteristic of today's breed. A flying wing is a tailless aircraft which has no definite fuselage. Elevators and ailerons may be combined as elevons on tailless aircraft. A tailless aeroplane has no separate horizontal stabilizer. Later, tailless kites incorporated a stabilizing bowline. Convair built several other successful tailless delta types. It refers to the tailless character of these amphibians. That was how the tailless 1901 glider behaved. They are frequently used on tailless aircraft such as flying wings. Concepts from the Air Force and industry have so far revolved around supersonic tailless aircraft. The British Armstrong Whitworth A.W.52G of 1944 was a glider test bed for tailless research.