PATIENTS with the clinical syndrome of mongolism have been shown to have 47 chromosomes instead of the 46 that are present in the normal human karyotype. 1–3 The additional chromosome, a member of the ...

Finding a new species is a rare event in easy-to-see and well-studied organisms like butterflies, especially if they inhabit well-explored areas such as Europe. Researchers have now discovered the ...

Today, we know what all the genes on a person's 46 chromosomes look like, but it is only by studying the gene coding information linked to different proteins that we can gain knowledge that can lead ...

The term "karyotype" refers to the chromosomal pattern inside the nucleus of an animal cell (eukaryote), as well as to describes the set of chromosomes in a species or in an individual organism. The ...

Nov. 27 (UPI) --Entomologists in Russia have discovered a new butterfly species with an unusual number of chromosomes. The newly named South Russian blue has 46 chromosomes, the same number as humans.