Whole-Genome Data Point to Four Species of Giraffe
Whole-Genome Data Point to Four Species of Giraffe
The genome sequences of 51 giraffes from all over Africa contribute to the latest attempt in an ongoing pursuit to pin down a species number.
Whole-Genome Data Point to Four Species of Giraffe
Whole-Genome Data Point to Four Species of Giraffe

The genome sequences of 51 giraffes from all over Africa contribute to the latest attempt in an ongoing pursuit to pin down a species number.

The genome sequences of 51 giraffes from all over Africa contribute to the latest attempt in an ongoing pursuit to pin down a species number.

speciation
Infographic: Animals of Different Species Hybridize
Infographic: Animals of Different Species Hybridize
Ashley Yeager | May 1, 2021
The offspring of crosses between related species can sometimes fill a new environmental niche, and such hybridizations may even lead to speciation.
Hybrid Animals Are Not Nature’s Misfits
Hybrid Animals Are Not Nature’s Misfits
Ashley Yeager | May 1, 2021
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.
Genomes Sequenced for Every US and Canada Butterfly
Genomes Sequenced for Every US and Canada Butterfly
Emily Makowski | Nov 20, 2019
Researchers analyzed more than 800 species.
Infographic: How the Mitochondrial and Nuclear Genomes Interact
Infographic: How the Mitochondrial and Nuclear Genomes Interact
Viviane Callier | Nov 1, 2019
From regulating each other’s gene expression to encoding different parts of the same proteins, the two genome types in every eukaryotic cell are far from independent.
The Two Genomes in Every Eukaryotic Cell
The Two Genomes in Every Eukaryotic Cell
Viviane Callier | Nov 1, 2019
Interactions between mitochondrial and nuclear genomes have further-reaching effects on physiological function, adaptation, and speciation than previously appreciated.
Archaea CRISPR Systems Grab DNA Memories During Interspecies Mating
Archaea CRISPR Systems Grab DNA Memories During Interspecies Mating
Carolyn Wilke | Mar 1, 2019
When different archaeal species mate, their CRISPR systems interact in ways that may influence their evolution.
Male Fish Borrows Egg to Clone Itself
Male Fish Borrows Egg to Clone Itself
Ruth Williams | May 23, 2017
A fish created by spontaneous androgenesis is the first known vertebrate to arise naturally by this asexual reproductive phenomenon. 
Study: Horses Did Not Develop New Traits During Periods of Rapid Speciation
Study: Horses Did Not Develop New Traits During Periods of Rapid Speciation
Diana Kwon | Feb 12, 2017
Speciation and development of new traits may not always go hand-in-hand.
Study: There Are Twice as Many Bird Species as Previously Estimated
Study: There Are Twice as Many Bird Species as Previously Estimated
Ben Andrew Henry | Dec 13, 2016
Standard taxonomy lumps together bird species that should be separate, a new study suggests, raising the total number of estimated species from 9,000 to 18,000.
Revered Biologist Dies
Revered Biologist Dies
Catherine Offord | Apr 26, 2016
Rick Harrison, an evolutionary biologist known for his research on speciation, has passed away at age 70.
How to Make a New Species
How to Make a New Species
Ruth Williams | Jul 1, 2015
Scientists mutate a mating pheromone and its corresponding receptor in yeast to promote speciation.
“King of Noses”
“King of Noses”
Jyoti Madhusoodanan | Sep 24, 2014
New hadrosaur uncovered in Utah hints at surprising speciation.  
Meal Plans
Meal Plans
Rina Shaikh-Lesko | Aug 1, 2014
Bacterial populations’ differing strategies for responding to their environment can set genetic routes to speciation.
Monkey See, Monkey Don’t
Monkey See, Monkey Don’t
Bob Grant | Jun 30, 2014
Species in a tightly knit genus of Old World primates have evolved tell-tale facial characteristics to prevent hybridization, a study shows.
Top 10 New Species
Top 10 New Species
Jef Akst | May 23, 2014
The International Institute for Species Exploration announces its picks of novel species discovered in the past year, including a carnivorous mammal, a tiny shrimp, and a fungus.
New Species Abound
New Species Abound
Jef Akst | Dec 25, 2013
A look at 2013’s noteworthy new species
Review: <em>The Origin of Species</em>
Review: The Origin of Species
Jef Akst | Nov 22, 2013
The Howard Hughes Medical Institute this week released three short films to teach students about evolution and speciation.
How, If, and Why Species Form
How, If, and Why Species Form
Tim Rogers, Alan J. McKane, Axel G. Rossberg | Nov 1, 2013
Biologists have struggled for centuries to properly define what constitutes a “species.” They may have been asking the wrong question—many smaller organisms might not form species at all.
Genome Digest
Genome Digest
Dan Cossins | Nov 13, 2012
What researchers are learning as they sequence, map, and decode species’ genomes