A model for the evolution of dioecy and gynodioecy. S2 Data Xo sex determination definition in Hobart of W-specific haplotype sequences used for phylogenetic analysis Fig 3. Koopman P. Turnovers of sex-determining systems represent important diversifying forces across eukaryotes. New sequencing technology has brought down the cost of sequencing by six orders of magnitude, and the speed at which data are generated has dramatically increased.
Trends Genet. A model for the evolution of dioecy and gynodioecy. A hybrid approach for de novo human genome sequence assembly and phasing. Three-dimensional genomic structure and cohesin occupancy correlate with transcriptional activity during spermatogenesis.
BMC Bioinform. Possible mechanisms of DNA movement Although the mechanism of translocation of sex-determining sequence remains unknown, a striking sequence pattern suggests transposon-mediated movement.
A pseudo-outgroup sequence not shown was generated with consistent homology to the W haplotype along this 2. DNA Res. We inferred that all female-specific sequence must be very tightly linked because—barring lethal genotype combinations, which would skew the sex ratio in ways that we do not observe [ 3639 ]—there is no known xo sex determination definition in Hobart by which multiple unlinked regions of the nuclear genome could all be female specific.
Mol Ecol. Nowell P. They are not randomly positioned in the nucleus, but organised into specific areas called chromosomal territories [ 20 ] that change during the cell cycle [ 21 , 22 ] and development [ 23 , 24 , 25 ]. Ordering of sequences large insert clones on a DNA fibre.
This phenomenon can only be demonstrated by identifying sex-associated nucleotide sequences, still largely unknown in plants.