Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules (e.g., in the DNA sequence of genes) can be used to determine species' relatedness.
Answer:
Respiratory system and circulatory system.
The respiratory system allow living things to obtain oxygen from the air while the circulatory system allows oxygen to be carried around the body.
Answer:
The correct answer would be the interphase stage of the cell cycle.
Explanation:
Membrane proteins float in the phospholipid bilayers and then it uses selective permeability to allow certian substances to pass through.
