Posts tonen met het label biology. Alle posts tonen
Posts tonen met het label biology. Alle posts tonen

27-07-2015

This Amazing Tree Grows 40 Different Kinds of Fruit Fruit Tree

Great Ideas

This is going to blow your mind.

In a video profiling artist and Syracuse University professor Sam Van Aken, viewers are introduced to his extremely interesting hobby.

The four-minute National Geographic feature shows Aken using his “chip grafting” method, which involves slicing a section of a branch and inserting a bud from a desired fruit tree, taping the wound until it’s able to take on the task of growing separate fruits by itself. After a year-long wait, the tree would offer up 40 varieties of stone fruits

22-06-2015

Fearful memories haunt mouse descendants

Certain fears can be inherited through the generations, a provocative study of mice reports1. The authors suggest that a similar phenomenon could influence anxiety and addiction in humans. But some researchers are sceptical of the findings because a biological mechanism that explains the phenomenon has not been identified.

According to convention, the genetic sequences contained in DNA are the only way to transmit biological information across generations. Random DNA mutations, when beneficial, enable organisms to adapt to changing conditions, but this process typically occurs slowly over many generations

Nature