Cytoplasm
-free-floating dna
bir, llum
ribosomes
free-floating dna
cell wall -
cell membrane
--free-floating dna
-cell wall
what might be the purpose of this structure

Which are characteristics of flukes? check all that apply. a they are free living. b they are a type of flatworm. c they reproduce sexually. d they have eyespots. e they are segmented.

Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

Can a trait be both polygenic and have multiple alleles? explain why or why not.