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.