<span>The answer is A) DNA.
The genetic information of the cell is packed within a nucleus. Unlike other organelles of the cell, chloroplasts and mitochondria have their own genetic information as well in the form of DNA. Mitochondrial DNA is circular in most of the organisms, only some protists, fungi and plants have linear mitochondrial DNA. It contains genes that code for transport RNA, ribosomal subunits, and for other proteins necessary for mitochondrial function. Chloroplast DNA has branched linear form. Chloroplast genes mostly code for proteins involved in photosynthesis.</span>
Conjugation is the direct transfer of DNA from one bacterium to another.
Bacteria can exchange genetic information through three different mechanisms; conjugation, transduction, and transformation. Bacterial conjugation involves the transfer of a plasmid from one bacterium to the other, through cell-to-cell contact. Bacterial transduction is performed through bacteriophages. Bacterial transformation refers to the process of moving genetic elements to various positions of the genome.
Answer:
C. They all have at least one cell
