HELP NEEDED ASAP Lyme disease is spread by ticks that attach to an animal to feed. Which describes the role of the tick?

A. The tick is a donor
B. The tick is a vector
C. The tick is a virus
D. The tick is a bacteria

Acladogram is a branching diagram that represents suggested evolutionary relationships among organisms based on the presence of unique traits. a scientist discovers a new organism that lacks limbs and does not have a true backbone. the organism lays eggs to produce offspring and has a cartilage-like rod known as a notochord running along its dorsal surface. on the cladogram below, select the species to which the newly discovered organism is most closely related.

How would you describe the the organisms in the second row of model 1 that are connected to the parents by a line

Which individual below would be considered heterozygous? a.dd b.dd c.dd