| Title |
Complex evolutionary trajectories of sex chromosomes across bird taxa
|
|---|---|
| Published in |
Science, December 2014
|
| DOI | 10.1126/science.1246338 |
| Pubmed ID | |
| Authors |
Qi Zhou, Jilin Zhang, Doris Bachtrog, Na An, Quanfei Huang, Erich D Jarvis, M Thomas P Gilbert, Guojie Zhang |
| Abstract |
Sex-specific chromosomes, like the W of most female birds and the Y of male mammals, usually have lost most genes owing to a lack of recombination. We analyze newly available genomes of 17 bird species representing the avian phylogenetic range, and find that more than half of them do not have as fully degenerated W chromosomes as that of chicken. We show that avian sex chromosomes harbor tremendous diversity among species in their composition of pseudoautosomal regions and degree of Z/W differentiation. Punctuated events of shared or lineage-specific recombination suppression have produced a gradient of "evolutionary strata" along the Z chromosome, which initiates from the putative avian sex-determining gene DMRT1 and ends at the pseudoautosomal region. W-linked genes are subject to ongoing functional decay after recombination was suppressed, and the tempo of degeneration slows down in older strata. Overall, we unveil a complex history of avian sex chromosome evolution. |
X Demographics
The data shown below were collected from the profiles of 27 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 5 | 19% |
| United Kingdom | 5 | 19% |
| Spain | 1 | 4% |
| Armenia | 1 | 4% |
| Sweden | 1 | 4% |
| Russia | 1 | 4% |
| Hong Kong | 1 | 4% |
| Unknown | 12 | 44% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 12 | 44% |
| Scientists | 12 | 44% |
| Science communicators (journalists, bloggers, editors) | 2 | 7% |
| Practitioners (doctors, other healthcare professionals) | 1 | 4% |
Mendeley readers
The data shown below were compiled from readership statistics for 395 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 5 | 1% |
| Sweden | 4 | 1% |
| Japan | 3 | <1% |
| Brazil | 3 | <1% |
| China | 2 | <1% |
| France | 2 | <1% |
| Netherlands | 1 | <1% |
| Australia | 1 | <1% |
| Lithuania | 1 | <1% |
| Other | 10 | 3% |
| Unknown | 363 | 92% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 93 | 24% |
| Researcher | 73 | 18% |
| Student > Master | 58 | 15% |
| Student > Bachelor | 36 | 9% |
| Student > Doctoral Student | 19 | 5% |
| Other | 67 | 17% |
| Unknown | 49 | 12% |
| Readers by discipline | Count | As % |
|---|---|---|
| Agricultural and Biological Sciences | 204 | 52% |
| Biochemistry, Genetics and Molecular Biology | 81 | 21% |
| Earth and Planetary Sciences | 9 | 2% |
| Environmental Science | 9 | 2% |
| Computer Science | 4 | 1% |
| Other | 28 | 7% |
| Unknown | 60 | 15% |
Attention Score in Context
This research output has an Altmetric Attention Score of 112. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 29 March 2019.
All research outputs
#374,505
of 25,371,288 outputs
Outputs from Science
#9,721
of 82,913 outputs
Outputs of similar age
#4,295
of 368,221 outputs
Outputs of similar age from Science
#150
of 887 outputs
Altmetric has tracked 25,371,288 research outputs across all sources so far. Compared to these this one has done particularly well and is in the 98th percentile: it's in the top 5% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 82,913 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 65.7. This one has done well, scoring higher than 88% of its peers.
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We're also able to compare this research output to 887 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 83% of its contemporaries.