Nine cases of mongolism have been reported with 46 chromosomes. 6–12 Examination of the karyotypes in these cases shows an unpaired chromosome most probably formed as a result of a reciprocal ...

As if sequencing a full human genome wasn't tricky enough, scientists are now attempting to reconstruct our species' genetic ...

To prepare the 46 chromosomes of a human cell for transport to the daughter cells during cell division, each chromosome forms a compact X-shaped structure with two rod-like copies.

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 ...

To prepare the 46 chromosomes of a human cell for transport to the daughter cells during cell division, each chromosome forms a compact X-shaped structure with two rod-like copies.

Learn about the formation of YY chromosomes and what kinds of physical characteristics and symptoms are associated with XYY syndrome. ... YY syndrome, and 46,XY/47,XYY mosaicism.

Six of 11 cells had 47, 1 cell had 48, and 1 cell had 45 chromosomes. Karyotypes of 1 46-chromosome cell and 5 47-chromosome cells showed the same types of abnormalities described above for the 46 ...

The Y chromosome is one of the smallest of the 46 human chromosomes, but it has been the most difficult for researchers to read. Until recently, more than half of it was unassembled. Having the full ...

Scientists fully sequence the Y chromosome for the first time, uncovering information that could have implications for the study of male infertility and other issues.

Triploidy is a rare problem with chromosomes, which carry the genetic information that makes each person unique. Most people have 46 chromosomes, arranged in 23 pairs.