Which of these signals a cell to proceed towards division?

The organelle pictured is found in cells of and is theorized to have once been an independent organism.

Name the tissue types that form the wall of each organ in questions 7-10

The genetic code is essentially the same for all organisms. based on this information, one can logically assume which of the following statements to be correct? a. dna was the first genetic material. b. the same codons in different organisms translate into the different amino acids. c. different organisms have different numbers of different types of amino acids. d. a gene from an organism can theoretically be expressed by any other organism. e. all organisms have experienced convergent evolution.