bryson9604
17.05.2021 •
Biology
A scientist is studying a fossil organism. The organism did not have any limbs and was shaped like an eel. Its skull and backbone were made of cartilage. Its backbone was all one piece instead of being composed of vertebrae. The organism did not have jaws or teeth. Based on the description, to what group is the organism most closely related?
A Lampreys
B Hagfish
C Cephalochordates
D Jawed vertebrates
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Ответ:
Organisms can be classified into one of three domains based on differences in the sequences of nucleotides in the cell's ribosomal RNAs (rRNA), the cell's membrane lipid structure, and its sensitivity to antibiotics. The three domains are the Archaea, the Bacteria, and the Eukarya.