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image: How Transposons Shaped Pregnancy

How Transposons Shaped Pregnancy

By Kate Yandell | January 29, 2015

A mass migration of mobile regulatory elements increased the expression of thousands of genes in the uterus during the evolution of pregnancy.

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image: America’s First Pooches

America’s First Pooches

By Jenny Rood | January 27, 2015

Study of ancient dog DNA sheds light on early Americans’ relationships with their pets.

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image: Fraction of SNPs Can Affect Fitness

Fraction of SNPs Can Affect Fitness

By Kerry Grens | January 21, 2015

A point mutation analysis of the entire human genome finds that alterations to as many as 7.5 percent of nucleotides may have contributed to humans’ evolutionary split from chimpanzees.

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image: Tracking Tuberculosis Over Time

Tracking Tuberculosis Over Time

By Jenny Rood | January 19, 2015

Genomic analysis of a multidrug-resistant lineage pinpoints historical correlations with human events.

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image: Reassessing One Really Old Fish

Reassessing One Really Old Fish

By Jenny Rood | January 13, 2015

New analysis of an ancient specimen prompts a rethink of fish forebears.

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image: The Benefits of Being a “Bearded Lady”

The Benefits of Being a “Bearded Lady”

By Bob Grant | January 8, 2015

A study of female eastern fence lizards that bear a distinctly male trait yields tantalizing clues about the tradeoffs involved in blurring the lines of sexual dimorphism.

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image: Contributors

Contributors

By Molly Sharlach | January 1, 2015

Meet some of the people featured in the January 2015 issue of The Scientist.

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image: Performance Art

Performance Art

By Mary Beth Aberlin | January 1, 2015

Regulation of genome expression orchestrates the behavior of insect castes and the human response to social stress.

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image: Why, Oh Y?

Why, Oh Y?

By Jef Akst | January 1, 2015

A toothpick and a bit of chance shaped David Page’s career, which he has dedicated to understanding the mammalian Y chromosome and fetal germ cell development.

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image: The Genetics of Society

The Genetics of Society

By Claire Asher and Seirian Sumner | January 1, 2015

Researchers aim to unravel the molecular mechanisms by which a single genotype gives rise to diverse castes in eusocial organisms.

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