Tumors and other cancers can shed DNA into the bloodstream, distorting the ratios. Sometimes this can lead to alarming ...
B chromosomes manipulate cell division for survival, and new research identifies key genes, including DCR28, involved in this ...
The Y chromosome, passed from fathers to sons, is shrinking over time, raising questions about its future role. Despite its ...
Because centromeres vary in length, an individual chromosome can contain anywhere from hundreds to thousands of potential CENP-B boxes. Experiments show that CENP-B works as a dimer, so it may be ...
Cytologists had been studying chromosome behavior since the late 19th century. Why did it take until 1956 to figure out the correct human chromosome number, thanks to Joe Hin Tjio and Albert Levan?
“This work is really important because the X chromosome has largely been excluded from genetic studies in the past,” said Amy Roberts, a molecular epidemiologist at King’s College London who was not ...
All men and only men have a Y chromosome. This biological fact allows us to trace back in time a direct, largely unchanged genetic line of inheritance from father to son. Every person, male or ...
In particular, it explains that humans have one fewer chromosome pair in their cells than apes, due to a mutation found in chromosome number 2 that caused two chromosomes to fuse into one.
Once upon a time, the Y chromosome — responsible for determining male sex — was as robust as its X counterpart. Fast forward a few million years, and it’s now a slimmed-down version of its ...