Answer:
behavior is considered the result of an interaction of genes and environment. For example, the development of intelligence depends on both the genetic influences on the brain and the environmental influences that affect learning in the child. Nature and nurture work together in behavior
Explanation:
Most animal cells differentiate at an early stage
Swamp ... Hope this helps :)
Lots of hand waving as is in the current field of much of molecular biology. Other than that experiments and observations. Basically the utilization of the scientific method and then trying to find the mechanism by which something occurs through even more research/experimentation.
HOPE THIS HELPS
