3. The two strands of a DNA molecule are held together by... A. Ionic bonds
B. Hydrogen bonds
C. Peptide bonds
D. Covalent bonds

Organisms are classified, or grouped into categories, based on similarities in their characteristics and/or evolutionary relationships. the study of how organisms are classified is known as

How does a lytic infection differ from a lysogenic infection?

Identify the terms using the following picture. principle of dominance item 1 can be described as the . item 2 can be described as the . the "p" represents from one parent.