Definitions for "Yeast artificial chromosome"
(YAC) A cloning vector constructed from the components of a yeast chromosome.
A cloning vector which contains sequences from a yeast chromosome required for DNA replication and segregration. Often used for cloning very large fragments of DNA.
A vector which can be propagated in budding yeast ( Saccharamyces pombe), consisting of the minimal elements required for a chromosome to replicate, and allowing for the cloning of large DNA fragments (hundreds of kilobase pairs).