title: Identification of the E3900 family, a second family of rye B chromosome specific repeated sequences.
abstract: A second family of highly repeated sequences has been identified on the B chromosome of rye (Secale cereale). The E3900 family was detected as a variant band in EcoRI digests of +B DNA. A clone of the basic repeat of the family was obtained, and the organization of the family was investigated by genomic hybridization. The E3900 family has no apparent homology to the A chromosome sequences of rye or other members of the Gramineae. The family has been localized by in situ hybridization to the end of the long arm of the rye B chromosome. The previously characterized E1100 sequence shows in situ hybridization to the same location as the E3900 family. These results are discussed in light of current theories of the origin of B chromosomes.
authors.forename: R
authors.initials: R
authors.lastname: Blunden
authors.forename: T J
authors.initials: TJ
authors.lastname: Wilkes
authors.forename: J W
authors.initials: JW
authors.lastname: Forster
authors.forename: M M
authors.initials: MM
authors.lastname: Jimenez
authors.forename: M J
authors.initials: MJ
authors.lastname: Sandery
authors.forename: A
authors.initials: A
authors.lastname: Karp
authors.forename: R N
authors.initials: RN
authors.lastname: Jones