File:Sex Determination Across Species.jpeg

Size of this preview: 647 × 599 pixels. Other resolution: 653 × 605 pixels.

Original file ‎(653 × 605 pixels, file size: 71 KB, MIME type: image/jpeg)

PMID: PMC4077654

File history

Click on a date/time to view the file as it appeared at that time.

	Date/Time	Thumbnail	Dimensions	User	Comment
current	10:48, 18 August 2015		653 × 605 (71 KB)	Z3460352 (talk \| contribs)	PMID: PMC4077654

You cannot overwrite this file.

The following page uses this file:

This file contains additional information, probably added from the digital camera or scanner used to create or digitise it.

If the file has been modified from its original state, some details may not fully reflect the modified file.

Image title	Sex chromosome differentiation.A. Reconstructed evolutionary path of sex chromosome differentiation in humans. Sex chromosomes originate from autosomes that acquired a sex-determining function (the Sry gene) after their split from monotremes. Suppression of recombination between the sex chromosomes, associated with degeneration of the non-recombining region of the Y chromosome, results in the morphological and genetic differentiation of sex chromosomes. Recombination suppression occurred in multiple episodes along the human X and Y chromosome, forming so-called evolutionary strata. The oldest stratum is shared between eutherian mammals and marsupials, while the youngest stratum of humans is primate-specific. B. The degree of sex chromosome differentiation ranges widely across species, spanning the entire spectrum of homomorphic to heteromorphic sex chromosomes, from a single sex-determining locus, as seen in pufferfish, a small differentiated region (strawberry and emu), most of the sex chromosomes apart from short recombining regions (humans), to the entire sex chromosome pair, as seen in Drosophila. Note that the sex chromosomes are not drawn to scale.
Copyright holder	Creative Commons Attribution License
Date(s)	1 July 2014
Publisher	Public Library of Science
Short title	Figure 1
Source	info:doi/10.1371/journal.pbio.1001899
Identifier	info:doi/info:doi/10.1371/journal.pbio.1001899.g001
IIM version	2