Araripe L. See other articles in PMC that cite the published article. McStay B.
Note that the sex chromosomes are not drawn to scale. Reconstructed evolutionary path of sex chromosome differentiation in humans. Indeed, many genes may serve as potential targets for sex determination in plants, given that male or female sterility can evolve in various ways . Regina Bailey. An equal number of males and females is, however, not always favored, even among autosomal genes e.
Britannica Premium: Serving the evolving needs of knowledge seekers. In Y-centered sex determination, the SRY gene is the main gene in determining male characteristics, but multiple genes are required to develop testes. The nematode C. Mutations are known, however, that override sex determination Table 1 suggesting that the conservation is not due to a lack of genetic sex chromosome and sex determination by positions in Aurora.
Your feedback will go directly to Science X editors. The nomenclature for the P. Read article at publisher's site DOI : A more direct transition between XY and ZW forms might occur, as exemplified by recent work. Berlin: Springer-Verlag. Our data are consistent with other studies in teleost fish, where species with X 1 X 2 Y systems often have one less chromosome than sister taxa .
Telomere addition may involve resection of additional sequences and thus the exact sites of the breaks are not known [ 19 ]. Theor Appl Genet 8 , — Parker, J. Phasing and improving scaffolding of genome assemblies. Are there additional functions for DNA elimination in nematodes? Genetic blueprint of the zoonotic pathogen Toxocara canis.