genomes

Dark Centers of Chromosomes Reveal Ancient DNA

June 18, 2019
Geneticists exploring the dark heart of the human genome have discovered big chunks of Neanderthal and other ancient DNA. The results open new ways to study both how chromosomes behave during cell division and how they have changed during human evolution.

Coast Redwood and Giant Sequoia Mega-Genomes Sequenced

April 23, 2019
Scientists have successfully sequenced the coast redwood and giant sequoia genomes, completing the first major milestone of a five-year project to develop the tools necessary to study these forests’ genomic diversity.

The Language of Biology: How the Heck Do Scientists Assemble a Genome?

March 14, 2019
The genome—the complete suite of an organism’s DNA and genes—is likened to a blueprint for life. On the surface, this comparison provides some understanding of a biological concept. But according to some scientists, it misses the mark.

Fly Genomes Provide Clues to Parallel Evolution

November 27, 2017
In a paper appearing in PLOS Genetics, Professor David Begun, Department of Evolution and Ecology in the UC Davis College of Biological Sciences, compared the genomes of different fly species to understand how genes—both within and between species—evolve adaptively. He found that two fly species that diverged from a common ancestor some 50 million years ago, exhibited parallel evolution on both short- and long-term timescales.

How a Genetic Mutation From 1 Bull Caused the Loss of Half a Million Calves Worldwide

October 17, 2016
Pawnee Farm Arlinda Chief was one of the most prolific bulls in the history of Holstein cattle breeding — but he also introduced a lethal gene into the population, responsible for an estimated half million spontaneous abortions worldwide. Now researchers have identified the mutation responsible, enabling ranchers to test for and avoid it.