Harris et al. Muller J, Reisz RR: Four well-constrained calibration points from the vertebrate fossil record for molecular clock estimates. Ewert M, Nelson C Sex determination in turtles: Diverse patterns and some possible adaptive values.
Cichlidae, and all included in the same study belonging to 13 families representative of many types of fishes see Table S1 in the Supplementary Materials. Spencer and Janzen found that hatchlings from temperature dependent sex determination animals that start with x in Poole nests were less energy efficient and grew less than their same-sex counterparts incubated in single-sex producing temperatures.
Nevertheless, the existence of TSD in fish is now widely accepted, assumed to be widespread and expected to be found in more species as new studies become available . Potential mechanisms of avian sex manipulation. Non-genetic sex determination occurs when the sex of an organism can be altered during a sensitive period of development due to external factors such as temperature, humidity, or social interactions.
J Fish Biol —
The aim of this study was to perform a detailed analysis on zebrafish sex determination, by combining the power of traditional and molecular technologies. This means that any genomic difference with less than 50 kb in length will not be picked up by our aCGH approach.
Background Turtles order Testudines represent one of the most anatomically peculiar vertebrate groups. Trends Genet. The control family D4F3 had a mass cross performed in the F 2 generation without selection.
The biggest difference produced by a male-biased pair was Figure 2. Therefore, in addition to their accounting for gene-tree heterogeneity, the use of the best-fitting substitution models seems to be equally important for these methods [ 42 ]. Furthermore, our statistical analyses reject any alternative hypotheses to the sister group relationship of turtles to Archosauria Table 2 , thus advancing the resolution of this long-standing controversial issue of vertebrate evolutionary history.
In this case—which governs all snake species—males are the homogametic sex ZZ and females are the heterogametic sex ZW. PLOS One.