Questions with the keyword 'development'

Does your brain change as you get older? by chajicka and 1 other. to Tom, Simon, Anita Comments: (No comments so far )
Why do the muscle cells suddenly start to twitch, what has changed to make them twitch? by leggeangie to Vicky, Serena, Samantha, Rachael, Matt, Karolina, Jean-Paul, Hayley, Dave, Alison Comments: (So far, one comment )
Do the switches in the genes determine further changes as the organism develops such as whether it becomes blood, bone by pkee and 1 other. Comments: (No comments so far )