W-chromosome
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Bird , Birds
A bird is a warm-blooded vertebrate (an animal with a backbone) that has feathers, a beak, and two wings. Its most unique feature is the abilit… Man-o-war Bird , man-o-war bird
man-o'-war bird or frigate-bird, most aerial of the water birds, found in the tropic seas. The man-o'-war bird's wingspread (71/2 ft/2… elephant bird , Aepyornithidae (elephant birds; class Aves, order Aepyornithiformes) An extinct family of large, flightless, running birds, that stood up to 3 m tall… Ornithology , Ornithology is the branch of zoology that deals with birds. It includes the study of the development, anatomy (structure), physiology (function), beh… Heterogametic Sex , heterogametic sex The sex that has sex chromosomes that differ in morphology (e.g. XY), and that therefore produces two different kinds of gametes wi… Mockingbird , mockingbird •absurd, bird, Byrd, curd, engird, gird, Heard, herd, Kurd, misheard, nerd, overheard, reheard, third, turd, undergird, undeterred, unhea…
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W-chromosome