A chromosome is a single, long molecule of DNA. These highly organized structures store genetic information in living organisms. Small sections of the chromosome, called genes, code for the RNA ...

Discover how researchers identified an octopus' ancient sex chromosomes and why their genetic history is such a mystery.

Researchers have identified a sex chromosome in the California two-spot octopus. This chromosome has likely been around for 480 million years, since before octopuses split apart from the nautilus on ...

The octopus just revealed another one of its secrets: what determines its sex. University of Oregon researchers have ...

The appropriate volume of each labeled pool (to contain 100 ng of ... Before hybridization, metaphase chromosomes on slides were treated with 100 μg/ml RNase for 1 h at 37 °C and 30 μg/ml ...

Humans possess two kinds of chromosomes, labeled X and Y. Typically, females have a pair of X chromosomes in every cell, ...

Not all that data was clearly labeled as being from male or female octopuses. But they found another example of the half-sized chromosome in another species of octopus. They also found it in squid ...

Live imaging of embryos at different stages. Chromosomes are labeled in magenta. 4-cell sister blastomeres are shown, along with 3D-reconstructed images of 2-to-4-cell and 4-to-8-cell divisions.