Answer: C.
Explanation: science involves data of the natural world and is gathered everyday which makes different observations b
At the smallest level of organization, the DNA wraps itself around small globular proteins called histones. Complexes of histones and DNA form nucleosomes, which appear as "beads" on the DNA strand. Chromatin refers to the decondensed DNA that has not formed separate chromosomes.
I think they discovered chromosomes in DNA so that backed up his Idea
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Terrestrial planet.
Terrestrial brings like us and animals live whereas as others don't satisfy any life.
