This category consisted of either triploid or tetraploid specimens that had any number of additional or missing chromosomes. These results are discussed below along with the multisomy karyotypes.

The nematode, officially named Panagrolaimus kolymaensis, was discovered at a depth of 40 meters inside a fossilized burrow ...

Manipulating farmed salmon to have three sets of chromosomes stops them breeding with their wild counterparts, but it appears ...

Pando’s sexless life is the result of being triploid, which means it has three copies of each chromosome in its cells instead ...

Sometimes, in rare cases, additional sperm can enter an egg, which results in a triploid offspring, not twins. This embryo has an extra set of chromosomes, totaling 69; the normal number is 46.

"We were able to study the impact of chromosome errors across the entire pregnancy in the horse," de Mestre said. "We found that triploidy is only associated with losses in early pregnancy." In ...