When determining sex, exceptions are the rule

For nearly a century, biologists have modeled the evolution of sex chromosomes—the genetic instructions that primarily determine whether an individual will develop into a male or female (or a certain mating type)—resulting ...

New insights into evolution: Why genes appear to move around

Scientists at Uppsala University have proposed an addition to the theory of evolution that can explain how and why genes move on chromosomes. The hypothesis, called the SNAP Hypothesis, is presented in the scientific journal ...

Dark centers of chromosomes reveal ancient DNA

Geneticists exploring the dark heart of the human genome have discovered big chunks of Neanderthal and other ancient DNA. The results open new ways to study both how chromosomes behave during cell division and how they have ...

Researchers gain insight into chromosome evolution in flies

NC State University researchers have shed new light on the evolution of fly chromosomes by identifying a gene indispensable for male survival in a devastating livestock pest species. What they found could have important implications ...

Knowledge gap on the origin of sex

There are significant gaps in our knowledge on the evolution of sex, according to a research review on sex chromosomes from Lund University in Sweden. Even after more than a century of study, researchers do not know enough ...

Was the dawn of man among trees in the cradle of disease?

A student-led conference to be webcast live will ask, in light of recent research, whether the story of human origin is radically different from established thinking, and what that might mean for everything from genetics ...

Advance in chromosomal evolution in sea cradles

A chromosomal study performed in a common Mediterranean chiton (sea cradle) provides information, relevant to systematic relationships of the species; furthermore the comparison of its karyotype with ones in literature allows ...

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