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Weird warbler reveals genetics of its mismatched colors

Weird warbler reveals genetics of its mismatched colors
eurekalert.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eurekalert.org Daily Mail and Mail on Sunday newspapers.

John Treadwell Nichols , Andrew Wood , David Toews , Marcella Baiz , Kenneth Parkes , Shaver Creek Environmental Center , Penn State Eberly College Of Science , Penn State , Creek Environmental Center , Penn State Eberly College , Huck Institutes , ஆண்ட்ரூ மரம் , டேவிட் கால்விரல்கள் , மார்செல்லா பைஸ் , ஷேவர் க்ரீக் சுற்றுச்சூழல் மையம் , பென் நிலை எபேர்லி கல்லூரி ஆஃப் அறிவியல் , பென் நிலை , க்ரீக் சுற்றுச்சூழல் மையம் , பென் நிலை எபேர்லி கல்லூரி , ஹக் நிறுவனங்கள் ,

Dueling evolutionary forces drive rapid evolution of salamander coloration

IMAGE: Sean Giery, Penn State
The research team found that salamander population sizes and pond chemistry remained stable over the last three decades. When averaged across the region, the overall frequency of each egg color morph also remained the same about 70% white egg masses in both 1990 and 2020 but in many cases the frequency within individual ponds changed drastically.
“At the scale of individual ponds, it’s an extremely dynamic system,” said Giery. “They don’t just reach one frequency and stay there. By focusing on individual ponds rather than just the region as a whole, we could tease apart what is driving these changes in population frequencies. In this case, we found two opposing evolutionary processes selection and drift.” ....

United States , Sean Giery , Marketa Zimova , Mark Urban , Dana Drake , Eberly Postdoctoral Research Fellow At Penn , National Science Foundation , Penn State Eberly College Of Science , University Of Connecticut , University Of Michigan , Penn State , Eberly Postdoctoral Research Fellow , Penn State Professor , Biology Bill Dunson , Michigan Institute , Global Change Biology , Penn State Eberly College , ஒன்றுபட்டது மாநிலங்களில் , குறி நகர்ப்புற , டானா டிரேக் , எபேர்லி போஸ்ட்‌டாக்டொரல் ஆராய்ச்சி சக இல் பென் , தேசிய அறிவியல் அடித்தளம் , பென் நிலை எபேர்லி கல்லூரி ஆஃப் அறிவியல் , பல்கலைக்கழகம் ஆஃப் கனெக்டிகட் , பல்கலைக்கழகம் ஆஃப் மிச்சிகன் , பென் நிலை ,

A new approach to undergraduate research | Penn State University

Launched during the pandemic, a team-based experience opens doors to students’ success
Biochemistry and molecular biology students taking BMB 490 write down their observations of cells while in the tissue culture room.Image: Emily Bell, Penn State
A new approach to undergraduate research
Seth Palmer
April 01, 2021
UNIVERSITY PARK, Pa. Having to turn students away from the lab just didn’t sit well with professor Emily Bell.
“We know that being involved in research is a really valuable and important experience for students,” she said. “It changes the way they think about science, the way they interact with their other coursework. And it s super important for their career readiness and their ability to be competitive and get the jobs that they want.” ....

Michael Lapioli , Ofure Akhigbe , Andrew Basht , Andrea Esposito , Khushi Kiran , Mina Halimitabrizi , Emily Bell , Keaton Chapman , Xianzhen Zhou , University Park , Penn State Eberly College Of Science , Research In Cellular Dynamics , Penn State , Undergraduate Research , Cellular Dynamics , Penn State Eberly College , ஆண்ட்ரியா எஸ்போசிட்டோ , எமிலி மணி , பல்கலைக்கழகம் பூங்கா , பென் நிலை எபேர்லி கல்லூரி ஆஃப் அறிவியல் , பென் நிலை , இளங்கலை ஆராய்ச்சி , செல்லுலார் இயக்கவியல் , பென் நிலை எபேர்லி கல்லூரி ,

Why masses of salamander eggs come in two colors

Why masses of salamander eggs come in two colors
futurity.org - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from futurity.org Daily Mail and Mail on Sunday newspapers.

United States , Sean Giery , National Science Foundation , Penn State Eberly College Of Science , University Of Connecticut , University Of Michigan , Penn State , Bill Dunson , Michigan Institute , Global Change Biology , Penn State Eberly College , ஒன்றுபட்டது மாநிலங்களில் , தேசிய அறிவியல் அடித்தளம் , பென் நிலை எபேர்லி கல்லூரி ஆஃப் அறிவியல் , பல்கலைக்கழகம் ஆஃப் கனெக்டிகட் , பல்கலைக்கழகம் ஆஃப் மிச்சிகன் , பென் நிலை , மிச்சிகன் நிறுவனம் , உலகளாவிய மாற்றம் உயிரியல் , பென் நிலை எபேர்லி கல்லூரி ,

Unusual DNA folding increases the rates of mutations

Unusual DNA folding increases the rates of mutations
DNA sequences that can fold into shapes other than the classic double helix tend to have higher mutation rates than other regions in the human genome. New research by a team of Penn State scientists shows that the elevated mutation rate in these sequences plays a major role in determining regional variation in mutation rates across the genome. Deciphering the patterns and causes of regional variation in mutation rates is important both for understanding evolution and for predicting sites of new mutations that could lead to disease.
“Most of the time we think about DNA as the classic double helix; this basic form is referred to as ‘B-DNA,’” said Wilfried Guiblet, co-first author of the paper, a graduate student at Penn State at the time of research and now a postdoctoral scholar at the National Cancer Institute. “But, as much as 13% of the human genome can fold into different conformations called ‘non-B DNA. ....

United States , Wilfried Guiblet , Francesca Chiaromonte , Kateryna Makova , Kristin Eckert , Vernem Willaman , Marziaa Cremona , Roberts Harris , Yi Fei Huang , Life Sciences At Penn , Penn State Cancer Institute , National Cancer Institute , Penn State College Of Medicine , Us National Institutes Of Health , Nucleic Acids Research , Statistics For The Life Sciences At Penn , Penn State Eberly College Of Science , Predoctoral Training Program , Translational Sciences Institute , Data Sciences , Pennsylvania Department Of Health , Penn State Institute Of Computational , Penn State , Nucleic Acids , National Cancer , Life Sciences ,