Identical Twins Accumulate Genetic Differences in the Womb
Identical Twins Accumulate Genetic Differences in the Womb
DNA replication errors during cell division cause monozygotic twins to diverge from each other even during the earliest stages of development, a new study finds.
Identical Twins Accumulate Genetic Differences in the Womb
Identical Twins Accumulate Genetic Differences in the Womb

DNA replication errors during cell division cause monozygotic twins to diverge from each other even during the earliest stages of development, a new study finds.

DNA replication errors during cell division cause monozygotic twins to diverge from each other even during the earliest stages of development, a new study finds.

antifreeze proteins, evolution, developmental biology
Developmental Biologist Kathryn Anderson Dies at 68
Developmental Biologist Kathryn Anderson Dies at 68
Amanda Heidt | Jan 6, 2021
The Sloan Kettering researcher used mutagenic screening to probe genes and molecular pathways, including Toll and Hedgehog, essential to development in fruit flies and mice.
Tardigrades’ List of Super Powers Grows Ever Longer
Tardigrades’ List of Super Powers Grows Ever Longer
Ashley Yeager | Jan 1, 2021
Water bears can survive extreme temperatures, oxidative stress, UV radiation, and more, but as work in climate change biology shows, they’re not invulnerable to everything.
Humans Domesticated Yeast Through Bread-Making: Study
Humans Domesticated Yeast Through Bread-Making: Study
Max Kozlov | Dec 11, 2020
Over centuries of cultivating Saccharomyces cerevisiae to make dough, bakers have put selective pressure on the species, causing it to diverge into two distinct groups, according to the authors.
Shrew Brains Shrink During Winter
Shrew Brains Shrink During Winter
Abby Olena | Dec 3, 2020
The animals kill off around one-quarter of the neurons in their somatosensory cortex, perhaps to save energy, and the cells appear to return the following summer.
Book Excerpt from <em>When Brains Dream</em>
Book Excerpt from When Brains Dream
Robert Stickgold, Antonio Zadra | Dec 1, 2020
Ferreting out the biological function of dreaming is a frontier in neuroscience.
Unearthed: World&rsquo;s Oldest Animal Sperm&mdash;And It&rsquo;s Giant
Unearthed: World’s Oldest Animal Sperm—And It’s Giant
Max Kozlov | Dec 1, 2020
The sperm, belonging to a tiny marine crustacean, dates back nearly 100 million years, making it the most ancient animal sperm found to date.
Opinion: The Biological Function of Dreams
Opinion: The Biological Function of Dreams
Robert Stickgold, Antonio Zadra | Dec 1, 2020
The scenarios that run through our sleeping brains may help us explore possible solutions to concerns from our waking lives.
Mosquitos in Asia and the Americas More Susceptible to Zika Virus
Mosquitos in Asia and the Americas More Susceptible to Zika Virus
Abby Olena | Nov 19, 2020
A study explains how Zika was present among mosquitoes in Africa for decades without causing the harm to human health seen outside the continent in recent years.
Giant Viruses Can Integrate into the Genomes of Their Hosts
Giant Viruses Can Integrate into the Genomes of Their Hosts
Amanda Heidt | Nov 19, 2020
Rather than introducing small chunks of DNA as other viruses do, some giant viruses can contribute more than 1 million base pairs to a host’s genome, broadening the ways in which viruses may shape eukaryote evolution.