ADVERTISEMENT

404

Not Found

Is this what you were looking for?

tag chimpanzee speciation genetics genomics

Hybrid Animals Are Not Nature’s Misfits
Ashley Yeager | May 1, 2021 | 8 min read
In the 20th century, animals such as mules and ligers that had parents of different species were considered biological flukes, but genetic sequencing is beginning to unravel the critical role of hybridization in evolution.
Mechanisms of Speciation
Leslie Pray | Nov 16, 2003 | 9 min read
Mechanisms of Speciation New examples of sympatric speciation revive some nagging questions | By Leslie Pray "A new species develops if a population which has become geographically isolated from its parental species acquires during this period of isolation characters which promote or guarantee reproductive isolation when the external barriers break down." --Ernst Mayr, Systematics and the Origin of Species, 19421 The duration of a cell cycle lasts anywhere from one hour to one day; Droso
Hidden Markov Genomics
The Scientist Staff | Apr 1, 2007 | 1 min read
Asger Hobolth at North Carolina State University's Bioinformatics Research Center and his team used a hidden Markov model to estimate that chimps and humans diverged from a common ancestor only about 4.1 million years ago.1 Hobolth looked at the probability distribution of 1.9 billion DNA base pairs across humans, chimpanzees, gorillas, and orangutans, searching for differences in the historical sequences. "Because recombination causes different parts of the genome to have different
Cellular DNA and epigenetics
Do Epigenetic Changes Influence Evolution?
Katarina Zimmer | Nov 1, 2022 | 10+ min read
Evidence is mounting that epigenetic marks on DNA can influence future generations in a variety of ways. But how such phenomena might affect large-scale evolutionary processes is hotly debated.
Genome Digest
Molly Sharlach | Sep 10, 2014 | 5 min read
What researchers are learning as they sequence, map, and decode species’ genomes
Genome Digest
Tracy Vence | Oct 23, 2013 | 4 min read
What researchers are learning as they sequence, map, and decode species’ genomes  
A Flood in Genomics
Brendan Maher | Nov 25, 2001 | 9 min read
Nine months have passed since draft sequences of the human genome were first published.1,2 One human gestation period later, the genome, as deciphered by the International Human Genome Sequencing Consortium, still screams toward its projected Spring 2003 finish date. "The trajectory we're on for meeting that goal is precisely on target," assures Francis Collins, director, National Human Genome Research Institute (NHGRI) and spokesperson for the largest public biological science project in histor
Sticky fingers
Ionel Sandovici and Carmen Sapienza | Jun 1, 2010 | 4 min read
By Ionel Sandovici and Carmen Sapienza Sticky fingers A single protein recognizes different sequences in different organisms and drives speciation. Computer graphic of a two zinc-finger peptide (yellow) binding to a DNA (red and blue) molecule. © KEN EWARD / BIOGRAFX / SCIENCE PHOTO LIBRARY Homologous recombination physically links together chromosomes at the first division in meiosis by sharing DNA strands between chromosomes. This creates genetic variat
SNPs as Windows on Evolution
Ricki Lewis | Jan 6, 2002 | 7 min read
Single nucleotide polymorphisms--variants in DNA sequences better known as SNPs and pronounced snips--provide a shortcut to comparing genes and genomes within and among species. The need to study SNPs has spawned a number of companies aimed at matching SNP patterns to disease risks. A few other organizations, however, are taking a broader view: mining SNPs for clues to human diversity and evolution. Association studies that correlate SNP patterns to disease risks are straightforward. Clues to
Getting to Megabase
Jorge Cortese | Dec 5, 1999 | 7 min read
Large Fragment Cloning Products and Services Gone are the days when all you had to do to get out of grad school was identify and clone a new gene. Besides, with the information rapidly gathered through the Human Genome Project, there will soon no longer be a "new gene." Enormous projects such as sequencing entire genomes have created a need to play with bigger pieces of the puzzle, and a new universe of technologies adapted to large DNA fragments has appeared. Assignment of a new gene to a par

Run a Search

ADVERTISEMENT