How does the structure of phylogeny charts explain homologous structures in organisms? a. new species branch off ancestral species, so two species can have similarities in body structure. b. all old species die off as soon as new species emerge, which explains why current species have traits of extinct species. c. in different lineages of organisms, two organisms may have similar structures that evolved in different ways. d. all organisms mutate their genome automatically when an environment changes, creating new traits and structures.

hey bro i looked it up on google the structure of the eye-spot in euglena viridie, e. ehrenbergii, and phacus pyriyorme is not as franzé haa described it. the so-called “crystal body” and “lens bodies” were not found in any of the individuals of the species examined by me. as earlier observers have stated, the eye-spot consists simply of a mass of pigment granules arranged in a single layer, and probably embedded in a protoplasmic framework, but the latter could not be seen, and its presence was only inferred from the fact that the pigment granules must be held together in some way, thd the eye-spot as a whole is capable of expansion, and that the pigment granules can be separated from each other.

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