Answer:
Biologybiology.kenyon.edu
Explanation:
DNA vaccines are third generation vaccines. They contain DNA that codes for specific proteins (antigens) from a pathogen. The DNA is injected into the body and taken up by cells, whose normal metabolic processes synthesize proteins based on the genetic code in the plasma that they have taken up.
Amphibians, birds, and mammals look the most similar as embryos.
Sieve tube member cells are living cells, have companion cells and are typical for gymnosperms.
Tracheids have secondary cells walls and are functioning like dead tubes that enable the flow of water through the plant. Tracheid occurs in vascular plants, both angiosperms, and gymnosperms.
The answer is that bryophytes do not have a xylem and a phloem. Bryophytes do not have the vascular transport system that is found in angiosperms and gymnosperms. They get food and distribute nutrients by diffusion from cell to cell.