Which species was involved in experimental cloning work done in 1950?

Study for the AEST Animal Science Specialist Certification Exam with flashcards and multiple choice questions, each with hints and explanations. Prepare for success!

The correct answer is frogs, specifically the African clawed frog (Xenopus laevis), which was the species involved in the experimental cloning work conducted in the early 1950s by biologist John Gurdon. Gurdon's groundbreaking research demonstrated that the nucleus of a differentiated cell could be transferred into an enucleated egg cell, leading to the development of a new organism. This experiment provided critical insights into cellular differentiation and the potential for cloning across various species.

The other options, while significant in their own right within the field of cloning and animal science, were not the focus of the pioneering work done in that specific year. Cows, pigs, and sheep have been subjects of later cloning advancements, particularly with the famous cloning of Dolly the sheep in 1996, but frogs were the first to be used in the experimental cloning processes of the 1950s. This early work in amphibians laid the foundation for the subsequent developments in cloning in mammals and other species.

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