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Genetics

How one gene in a tiny fish may alter an aquatic ecosystem
a tiny fish swims under green, murky water

Threespine stickleback, which occupy lakes across the northern latitudes, are a tiny fish with an outsize impact on evolutionary research. Penn biologist Seth Rudman has found that a single gene affects the way they interact with their environment. (Photo: Seth Rudman)

How one gene in a tiny fish may alter an aquatic ecosystem

Linking genomics to evolution to ecology, the work takes an unusual approach to reveal broad implications of how species adapt to their local environment.

Katherine Unger Baillie

The diversity of rural African populations extends to their microbiomes
A group of people, some holding sacks, next to a small rustic house and under trees

Hadza people gather to receive a government-provided food supply of beans and maize. (Photo: Alessia Ranciaro/Tishkoff Lab)

The diversity of rural African populations extends to their microbiomes

In the largest study of its kind, researchers led by PIK Professor Sarah Tishkoff, Matthew Hansen, and Meagan Rubel investigated the gut microbiomes of people from Botswana and Tanzania, and illuminate the impact of lifestyle, geography, and genetics in shaping the microbiome.

Katherine Unger Baillie

Using fat cells to predict response to anti-diabetes drugs
human fat cells

Using fat cells to predict response to anti-diabetes drugs

In a new study, a team of researchers have demonstrated—using fat cells derived from human stem cells—that individual genetic variation can be used to predict whether the TZD rosiglitazone will produce the unwanted side effect of increasing cholesterol levels in certain individuals.

Penn Today Staff

Personalized gene editing is a family affair
  anatomically-accurate heart superimposed over graphic waves

Personalized gene editing is a family affair

A new stem cell-based test aims to decrease the uncertainty of gene variants and their affect on a patient’s health.

Penn Today Staff

Why we have hair here, but not there
one-half of a child's face with a fake mustache

Why we have hair here, but not there

A new study answers a fundamental question in human evolution about how and where hair grows on the body, and reveals the existence of a naturally-occurring inhibitor to hair growth.

Penn Today Staff

Multidisciplinary team to develop stem cell-based approaches to restore vision
3-d-image-of-eyeball-anatomy

Multidisciplinary team to develop stem cell-based approaches to restore vision

Gene therapies have had success in treating blindness but can’t save areas of the retina where cells have already died. In a new effort, School of Veterinary Medicine scientists John Wolfe and William Beltran will attempt to develop a stem-cell-based approach that restores vision.

Katherine Unger Baillie