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That's what they did. And if all scientists working in the field, share their findings and data, knowledge is acquired more rapidly.
From this point, many disciplines are born, all dealing with several different questions that can be asked.
What are the genetic differences between a human and a chimp?
What are the proteins involved in Alzheimer disease and which is their actual behaviour?
How many genes has the vinegar fly?
Are they similar to human genes?