Which of the Following Observations Was Made in the Mid-1800s

Multiple Choice

Which of the following observations was made in the mid-1800s and implied that the nucleus contains the genetic material?

A) The nucleus contains DNA.
B) The nucleus contains chromosomes.
C) Nuclei are the only cellular components contributed equally by egg and sperm.
D) Chromosome number decreases at meiosis.
E) Nuclear DNA content decreases at mitosis.