Word Count : 252

---

Lederberg and Tatum in 1946 conducted a classical experiment in bacterial genetics using *Escherichia coli* to demonstrate genetic recombination. They worked with two different mutant strains of *E. coli*, each deficient in specific nutritional requirements. One strain could not synthesize certain amino ______ ___ ____ _____ __________ __________.
_____ _____ _______ ______ __________ ________.
__________ ___ ______ ___ _____ __________ _______ _________ ______.
__________ __________ ______ _____ __________.
_____ ______ ______ ____ ___ _____ ___ ________ _______ __________ _________.
______ _________ ___ __________ ____ ______.
______ _____ _______ _______ _____ _____.
_________ _______ _________ __________ _____ ___ ________ ___ ____.
___ ________ ________ ______ _____ _____ _________ ______.
_______ _____ _________ ________ _______ ______.
____ ___ ___ _____ ________ ____ ____ ________ ___ _________ _________.
_____ ___ _____ ___ ___ ________ _________.
______ __________ _________ ______ _______ ____.
____ ____ ________ _________ _____ _________ _______ ________ __________ _________ _______.
____ ___ __________ ___ ____ ___ _________.
__________ __________ _______ ______ ____ ___ ______ ________ ________ _______.
_________ ___ ___ _____ ________ _________ ________ _____ ______ ___.
__________ ______ __________ ___ _______ ________ ________ ____.
______ ___ ___ _____ __________ ____ _________.
_______ _____ ________ ____ ___ ______ _________ ___ ___ _______.
_______ ____ ________ _____ ______ ________ _______ ___ _______.
______ ________ _______ _____ _____ _______ ____.
_______ ________ _______ ___ _____ __________ ___.
________ ________ _____ _________ ____ ______ ___ _____ _______ _________ ______ ___.
________ __________ ___ __________ ____ ____ ____ ___ __________ _________ ____.
___ _________ _________ ___ _________.
Get Full Answer on WhatsApp