In many organisms, X and Y chromosomes can jettison extra material during DNA-swapping sessions with each other. But the campion lost much of its ability to tidy up large parts of its sex ...

Chromosomes are tightly coiled structures in each of your cells that contain DNA, the code for all life. DNA is organized in segments on chromosomes called genes. Humans typically have 46 ...

The Y chromosome has seen significant changes over the course of human evolution. "In comparison to the X, the Y is tiny. There are only 45 genes on the Y chromosome, ...

Translocations, in genetics, happen when chromosomes break and the pieces attach to other chromosomes. This mixing of genetic material has important results. The resultant chromosomes are lacking ...

B chromosomes, studied in rye by the IPK Leibniz Institute, manipulate cell division via “chromosome drive.” Using advanced sequencing, researchers identified five candidate genes, including DCR28, a ...

Summary: New research suggests that the Y chromosome may be responsible for the higher prevalence of autism in males, shifting focus away from protective factors on the X chromosome.Analyzing genetic ...

Increased risk for autism appears to be linked to the Y chromosome, a Geisinger Health System study has found, offering a new explanation for the greater prevalence of autism in males. The results ...

And the bobtail squid, which diverged from the California two-spot octopus between 350 million and 250 million years ago, had a chromosome that was an outlier in having more transposable elements ...

Sex chromosomes are the genetic elements that define a person's biological sex. Learn about the XX and XY chromosomes, the sex determination system, and other chromosome combinations.

Related: Genomes of 51 animal species mapped in record time, creating 'evolutionary time machine' It's not clear exactly why the Y chromosome is evolving so rapidly. For starters there is only a ...

Each chromosome holds genes that, when “switched on,” produce proteins to do work inside of cells. You might expect that women, with two copies of X, would make twice as many X proteins as men do.

For many years, the human Y chromosome was terra incognita. Scientists completed the genetic sequences of other chromosomes, the threadlike structures that hold an organism’s DNA. But more than ...