In the case of S. Revisiting the dioecy-polyploidy association: alternate pathways and research opportunities. Google Preview.
Earlier work on sex determination in melon implicated ethylene gas as a feminizing agent; in the absence of ethylene gas, female flowers produced stamens, suggesting a role for ethylene in the active suppression of stamen development Byers et al.
A model for the evolution of dioecy and gynodioecy. De novo transcript sequence reconstruction from RNA-seq using the Trinity platform for reference generation and analysis.
In these species, fertilization determines sex. The sex chromosomes are the X chromosome and the Y chromosome. The X and Y chromosomes have small regions of homology called pseudoautosomal regions. The Y chromosome is actually one of the smallest in humans, the Y chromosome is about 6 million base pairs long — the smallest is about 5 million — although Y chromosomes can vary in size due to the presence of repeated DNA sequencesbut contains the genetic information necessary to develop male characteristics.
The time at which insemination occurs during the estrus cycle has been found to affect the sex ratio of the offspring of humans, cattle, hamsters, and other mammals. Sex determination and sex chromosomes boys in Colorado human sex chromosomes, a typical pair of mammal allosomes, determine the sex of an individual created in sexual reproduction.
They produce sperm cells that contain either an X chromosome or no sex chromosome, which is designated as O.
Mol Ecol. Mapping of the sex trait and sequence analysis of two linked genomic regions in Populus tremuloides. The molecular biology of temperaturedependent sex determination. Biology Basel 4 , — Related articles in Web of Science Google Scholar.