Biology 1001A Lecture : lecture

in our online lecture we include a quote by E. O. Wilson,

Why is such a seemingly complicated scheme used for LacZ complementation (X-gal colour selection and α-peptide complementation), in which most of the lacZ gene is in the host chromosome and the small α-peptide resides in the cloning vector? In other words, why not have the entire lacZ gene in the vector? Give two reasons. [3 marks] [Clue: From the relevant lectures and the Lab Manual, based on colour selection (Lecture 4) and the sizes of recombinants (Lecture 5)]

Would you have liked to hear Mendel's lectures on his pea plants? Why or why not?