What process did watson and crick use to develop their model of dna, and how did it differ from the controlled experiments used by griffith, avery, and hershey and chase?

Watson and Crick already knew DNA's composition, based on the work of other researchers (Franklin). G A H and C manipulated possible components of DNA that would be able to identify DNA's material.

Explanation:

after receiving a stimus, the sensory receptors send(s) signals to the appropriate area of the body.  

the must be sensory neurons.  

hope its .

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?