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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.

developmental biology, disease & medicine

Transposons Identified as Likely Cause of Undiagnosed Diseases
Jef Akst | Jan 13, 2020 | 4 min read
A tool for identifying jumping gene insertions in DNA sequencing data turns up possible explanations for four patients’ rare developmental disorders.
Paternal Age Linked to Brain Abnormalities Associated with Autism
Jef Akst | Oct 1, 2019 | 2 min read
Brain scans of autistic and non-autistic men reveal an association between white matter aberrations and the ages of their fathers at the time the sons were born.
Genes that Are Harmless on Their Own Cause Disease When Combined
Chia-Yi Hou | Sep 1, 2019 | 3 min read
A case study of a family demonstrates that different genetic mutations from the two parents cause severe heart disease symptoms in the children.
c Caenorhabditis elegans neural map neuron pathway connections connectome
Biologists Create New Maps of Caenorhabditis elegans Neurons
Chia-Yi Hou | Jul 8, 2019 | 2 min read
The connectomes trace 385 neurons in the male worm and 302 neurons in the hermaphrodite worm.
Ultrasound of twins
Doctors Report World’s Second Case of “Semi-Identical” Twins
Catherine Offord | Feb 28, 2019 | 2 min read
The extremely rare event, thought to be caused by two sperm cells fertilizing the same egg simultaneously, was last reported in 2007.
Infographic: How Exposure to Cannabis in Utero Affects Development
Andrew Scheyer | Jan 1, 2019 | 2 min read
Rodent and human studies have revealed a multitude of effects starting during gestation and lasting into adulthood.
Prenatal Exposure to Cannabis Affects the Developing Brain
Andrew Scheyer | Jan 1, 2019 | 10+ min read
Children born to moms who smoked or ingested marijuana during pregnancy suffer higher rates of depression, hyperactivity, and inattention.
Image of the Day: See Through
Catherine Offord | Nov 6, 2018 | 1 min read
A zebrafish model of the birth defect craniosynostosis provides insights into how the condition develops.
Maternal Obesity and Diabetes Linked to Autism in Children
Sukanya Charuchandra | Oct 1, 2018 | 5 min read
Inflammation may be a strong contender for the connection between mom’s weight and children’s neurodevelopment, according to lab studies on animals.
In Their Earliest Days, Embryos Record Their Environments
Kerry Grens | Oct 1, 2018 | 4 min read
Methylation patterns at so-called metastable epialleles in the genome stamp a memory into each of our cells.
Amazonians Offer Clues to Human Childhood Development
Shawna Williams | Jul 1, 2018 | 4 min read
A study of Shuar children in Ecuador provides a window into how the human body responds to infection in the sorts of conditions that shaped our species’ evolution.
Colorblindness Study Reveals Unexpected Way to Make Blood Vessels
Ashley Yeager | May 1, 2018 | 3 min read
Researchers stumbled across the connection while searching for ways to reduce vision problems in people with achromatopsia.
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