• meiosis
  • We have developed a yeast model system in which each yeast cell has one pair of non-recombined partners in every meiosis. (omrf.org)
  • appear
  • The farther back in time we look, the more similar X and Y appear, boosting the theory that they arose from a pair of identical autosomes. (abc.net.au)
  • Most likely this suppression was the result of a series of chromosomal inversions on the Y chromosome, which would also explain why the genes appear to be in order on the X but scrambled on the Y," Page explains. (abc.net.au)
  • found
  • Researchers at the Howard Hughes Medical Institute have found that the X and Y chromosomes evolved from a standard identical pair around 300 million years ago - shortly after the divergence of the evolutionary lines leading to mammals and birds. (abc.net.au)
  • The X chromosome was found to have four groups of genes physically arranged as four consecutive blocks, like the layers of rock in geological strata. (abc.net.au)
  • model
  • Our projects primarily use the yeast, Saccharomyces cerevisiae, as a model to elucidate conserved aspects of eukaryotic chromosome biology. (omrf.org)