A Random Jumble of stuff!
The behaviors, ideas, attitudes, and traditions shared by a large group of people and transmitted from one generation to the next.
our expectations about the way men and women behave.
random errors in gene replication.
Small segments of the giant DNA molecules.
develop from separate fertilized eggs, are genetically no similar than ordinary siblings, but share the same womb.
Emotional excitability in people. whether reactive and intense, or easygoing and quiet.