For the answer to the question above,
the development of specialized tissues and organs in a multicellular organism's embryo occurs as a result of "<u><em>differentiation</em></u>"
It is the <span>process where a cell changes from one cell type to another.</span>
D. Secondary online and layers of periderm
Didn't quit understand the question but if you were asking who basically came up with the idea of offspring inherited traits then the idea was proposed in ancient times by Hippocrates and Aristotle and was commonly accepted near to Lamarck's time.
Answer:
The virus integrates into long-lived immune system cells and remains dormant in those cells for many years.HIV's ability to hide its instructions inside of cells where drugs cannot reach it.