Encoded within this DNA are the directions for traits as diverse as the color of a person's eyes, the scent of a rose, and the way in which bacteria infect a lung cell. DNA is found in nearly all ...

all the way down to the level of the atoms that make up a single DNA base. The human body contains about 100 trillion cells, each working together in a complex symphony of interactions.

cell organelles include mitochondria, ribosomes and chloroplasts in plants. Cytoplasm, ribosomes present; there are no mitochondria or chloroplasts. Genetic material DNA in a nucleus, plasmids are ...

Along the way you'll also see the intricate bending and winding that takes place within a chromosome, which allows more than five feet of DNA to fit within the nucleus of a tiny cell.

while such DNA is turned off as its natural state in mammalian cells, despite their having a common ancestor a billion years ago and the same basic molecular machinery, a new study finds.