30

Stories about: centromere

How Did the Chromosome Splitter Appear? When chromosomes divide, they look like molecular Siamese twins: two stretches of DNA joined along a portion named the centromere. Centromeres ensure that when the new two DNA molecules separate, new cells present the right DNA amount. The origin of the centromeres is unknown. A new controversial theory states that c... 5 June 2007 05:16 GMT