In addition to a physical exam, EKG, and cardiac enzymes, what else is recommended to be obtained to evaluate someone suspected of post-vaccination myopericarditis

you and your brother should be dizygotic twins (fraternal) twins since identical twins can only be one gender: boy and boy   or   girl and girl.

protist eukaryotes that are not plants, animals, or fungi ("misfits")

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands