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Describes the method perfected by Dr John Gurdon at Oxford University for producing the first cloned frogs. The procedures include stimulating donor female frogs ('Xenopus laevis’ the South African clawed...
Habits and life cycle of ‘Xenopus laevis’; its use in pregnancy tests.
Demonstrates experimental procedure, using hair loops and glass needles, in removing the neural crest in the ‘Axolotl’ and in implanting the dorsal lip of the blastopore in ‘Xenopus’.*
A summary of a lesson designed to introduce a certificate class to the basic points of a closed circulatory system. The microscopic views the pupils are expected to see at each stage are included.
Comprehensive fundamental demonstration of mitosis as exemplified in animal and plant cells, using animation sequences. The clawed toad ‘Xenopus laevis’; tissue culture cells from the tadpole heart; the...
Gastrulation and neurulation are studied by time-lapse sequences, stereoscan (3-dimensional) pictures of the cell surfaces and by sections examined under both the light and the transmission electron...
Discusses deletions where a section of DNA is removed; and substitutions, where the overall DNA length remains the same but the sequence changes. Includes use of deletion mutation to investigate...
Shows normal development in a wide range of organisms, using real-time and time-lapse cinemicrography to demonstrate major cellular rearrangements. The diversity of embryonic patterns by shown by the way...
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