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a black wolf and a gray wolf follow a third gray wolf, whose head is tilted back to watch, as they trot through a snowy background, with light colored, barren trees in the background.
Black and Gray Wolf Pairings Stem Disease, Stabilize Population: Study
The black fur allele has fitness costs but also confers higher immunity against canine distemper virus, making mix-and-match mating key to population survival.
Black and Gray Wolf Pairings Stem Disease, Stabilize Population: Study
Black and Gray Wolf Pairings Stem Disease, Stabilize Population: Study

The black fur allele has fitness costs but also confers higher immunity against canine distemper virus, making mix-and-match mating key to population survival.

The black fur allele has fitness costs but also confers higher immunity against canine distemper virus, making mix-and-match mating key to population survival.

phenotypic variation
two quails
Chromosomal Rearrangement Linked to Less Mobile Quail
Chloe Tenn | Dec 7, 2021 | 5 min read
The Scientist interviews evolutionary biologist Carles Vilà about how a large genomic inversion detected in common quail affects the birds’ physical characteristics and migratory behaviors.
Five morphs of Poecilia parae—from top: melanzona yellow, melanzona blue, melanzona red, parae, immaculata—and a female (bottom) of the same species
Fish Species’ Y Chromosomes Diverged Even Without Recombination
Catherine Offord | Sep 1, 2021 | 2 min read
Researchers discover surprisingly high levels of genetic diversity among the colorful male morphs of a freshwater fish.
Co-mimic pairs from the species Heliconius erato (odd columns) and Heliconius melpomene (even column) sorted by greatest similarity from top left to bottom right
Image of the Day: ButterflyNet
Nicoletta Lanese | Aug 16, 2019 | 1 min read
Scientists used machine learning to analyze the coevolution of physical traits in butterflies.
Image of the Day: A-maize-ing!
The Scientist Staff and The Scientist Staff | May 3, 2018 | 1 min read
By combining alleles involved in plant height, an agricultural scientist has grown the world’s tallest cornstalk, breaking his own record set in 2017.
Record-Setting Corn Grows 45 Feet Tall
Jef Akst | Apr 1, 2017 | 4 min read
A plant breeder succeeds in growing a huge maize plant thanks to a known mutation and a few environmental tricks.
Researchers Grow “Frankenstein Ants” to Study Epigenetics
Jeffrey M. Perkel | Oct 1, 2016 | 4 min read
A molecular biologist ventures into entomology to use genetically modified ants as laboratory models of behavioral epigenetics.
Finding Phenotypes
Edyta Zielinska | Apr 1, 2012 | 2 min read
Genes shared across species that produce different phenotypes – deafness in humans and directional growth in plants – may reveal new models of disease.
Mobile DNA Makes Transcription Stumble
Sabrina Richards | Feb 27, 2012 | 1 min read
Researchers show that retrotransposons can influence phenotypic variation by triggering early transcription termination.
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