For instance, in Figure 1a, human chromosome 15 has been colored yellow. (The key along the bottom of the diagram tells you how each human chromosome has been coded.) Then, in the top part of the ...

Each human cell contains 23 pairs of chromosomes ... imprinted genes and an under-expression of maternal ones on chromosome 15. Children with this genetic disorder tend to be more hyperactive ...

In particular, it explains that humans have one fewer chromosome pair in their cells than apes, due to a mutation found in chromosome number 2 that caused two chromosomes to fuse into one.

The research focused on parts of chromosomes known as human accelerated regions (HARs), which have evolved most rapidly since humans split from chimpanzees on the evolutionary tree – changing 10 ...