Which of the following provides the best comparison between reptiles and fish?
a: they both have scales, but fish are ectothermic, and reptiles are endothermic
b: they are both ectothermic, but fish have gills, and reptiles have lungs
c: they are both vertebrates, but fish have three-chambered hearts, and reptiles have two-chambered hearts
d: they both lay eggs, but fish are invertebrates, and reptiles are vertebrates

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.