Ancestors of hagfish are thought to have been the earliest animals with?
sunlight cells several genes fossil record ice backbones pigmentation antibodies
A B C D E F G H
Animals with backbones are called vertebrates.
Ancestors of hagfish are thought to have been the earliest Animals with backbones
Ancestors of hagfish are thought to have been the earliest animals with? (A) sunlight (B) cells (C) several genes (D) fossil record (E) ice (F) backbones (G) pigmentation (H) antibodies