When a species lives in two distinct types of habitats, individuals with traits better suited to each habitat will thrive and ...

Advancements in genome sequencing have challenged the long-standing belief that the position of the centromere in the chromosome is fixed. Researchers from Okayama University, Japan, have analyzed ...

An appraisal. Basic tenets of cytogenetics -- The architecture of the chromosome. Viral chromosomes ; The chromosomes of protocells ; Episomes ; The chromosomes of eucells ; Euchromatin and ...

How do living things evolve? What is the myriad of processes by which generic variations in a population affect organisms' survival and allow reproduction in an ever-changing environment? Why do these ...

The study of cytogenetics in Hymenoptera reveals a remarkable diversity in chromosomal number, structure and organisation across ants, bees and wasps. Research in this field has illuminated how ...

Science, founded by Thomas A. Edison in 1880 and published by AAAS, today ranks as the world's largest circulation general science journal. Published 51 times a year, Science is renowned for its ...

Pregnancy loss remains common around the world. About 15 percent of known pregnancies end in miscarriage, although the true number is likely much higher, since many pregnancies are lost before they ...

Understanding the material basis of adaptive evolution has been a central goal in biology dating back to at least the time of Darwin. One focus of current debates is whether adaptive evolution relies ...