Who Originally Identified a Highly Condensed Structure in the Interphase

Question

Who originally identified a highly condensed structure in the interphase of nuclei?
A) Lyon
B) Barr and Bertram
C) Ohno

Accepted Answer

Barr and Bertram originally identified the highly condensed structure in the interphase of nuclei, which later became known as the Barr body. Lyon proposed the theory of X-chromosome inactivation, which involves the formation of the Barr body, but did not identify the structure initially. Ohno is known for his work on the evolution of sex chromosomes, but did not identify the Barr body either.