Exercise: Implement a Gene inheritance model combining DNA

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• A class representing a person. It has an attribute called "genes" which is string of letters. Each character is a gene.
• Implement the + operator on genes that will create a new "Person" and for the gene will select one randomly from each parent.

a = Person('ABC')
b = Person('DEF')

c = a + b
print(c.gene) # ABF