In addition to their circular chromosome bacteria also have smaller rings of dna called
a. rna.
b. genes.
c. cells.
d. plasmids.

According to the cladogram, which organisms have roundworms as a common ancestor?

Aboy jumps into a cold swimming pool and his body tempature goes down hus muscles ,blood vessels

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them