They investigated the interaction of cytoplasm and chromosomes, and demonstrated its relevance in heredity and development. Theodor Boveri: becoming a zoologist. Theodor Boveri was born in the ...

Prairie dogs live in underground burrows, extensive warrens of tunnels and chambers marked by many mounds of packed earth at their surface entrances. Burrows have defined nurseries, sleeping ...

In dogs, it looks very similar to Alzheimer ... Normally, people have 23 pairs of chromosomes; when someone is born with an extra copy of chromosome 21, it produces the effects of Down syndrome.

Artificially-derived chimpanzee neurons grow only one or two neurites (connecting wires), as shown in the center image. Human-accelerated regions (HARs) in chromosomes help human neurons grow multiple ...