Shuichi Asakawa

TL;DR: In this article, the authors reported the sequence and gene catalogue of the long arm of chromosome 21 and sequenced 33,546,361 base pairs (bp) of DNA with very high accuracy, the largest contig being 25,491,867 bp.

TL;DR: Rec recombinant breakpoint analysis is used to restrict the sex-determining region in medaka fish to a 530-kilobase stretch of the Y chromosome, and it is suggested that thesex-specific DMY is required for testicular development and is a prime candidate for the medaka sex-Determining gene.

TL;DR: The sequence of the euchromatic part of human chromosome 22 is reported, which consists of 12 contiguous segments spanning 33.4 megabases, contains at least 545 genes and 134 pseudogenes, and provides the first view of the complex chromosomal landscapes that will be found in the rest of the genome.

TL;DR: The construction of the whole-genome bacterial artificial chromosome (BAC) map and its integration with previous landmark maps and information from mapping efforts focused on specific chromosomal regions are reported.

TL;DR: It is found that in the fish medaka the Y chromosome-specific region spans only about 280 kb and contains a duplicated copy of the autosomal DMRT1 gene, named D MRT1Y, which is the only functional gene in this chromosome segment and maps precisely to the male sex-determining locus.