Answer :
Option A, A prion is an infectious protein, and in yeast and filamentous fungus, cytoplasmic mixing provides the mechanism for horizontal transmission of infectious organisms.
The "proteinaceous infectious particle," or "prion" (pronounced "pree-on"), was discovered by Prusiner and colleagues. Both infections and gene mutations in the protein-encoding gene can result in prion development in the brain. A prion is a kind of protein that can cause the normal folding of brain proteins. Both people and animals are susceptible to prion infections, which are occasionally transmitted to humans through diseased meat products.
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