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Specialized breeds of cattle have been developed and adapted to different environmental and economic conditions. Through breeding, the cattle have been modified with respect to one or more phenotypic traits (for example, the production of meat or…

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from article Animal breeding

Artificial insemination is a process often used by animal breeders. Through the use of this method, sperm collected from male animals can be deposited in female animal genitalia by instruments rather than by natural service. (Credit: alex-mit/Getty…

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from article Animal breeding

Dolly (the world's first cloned mammal) and her first-born lamb, Bonnie. (Credit: Roslin Institute)

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from article Date

Ripening Deglet Noor dates (Phoenix dactylifera). (Photo courtesy of Stan Shebs, Agricultural Research Service, United States Department of Agriculture)

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from article Rainforest

Clouds overlying a rainforest in Costa Rica. (Credit: John J. Mosesso/U.S. Geological Survey)

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from article Rainforest

Tree ferns and profuse tropical vegetation framing a mountainside waterfall (visible in the background) in a rainforest located on the Caribbean island of Dominica. (Credit: Randolph Femmer/U.S. Geological Survey)

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from article Optical tracking systems