<span>Postthrombotic syndrome involves the formation of blood clots in the body and that is its hallmark. Some of the symptoms include leg pain and swelling. Lipodermatosclerosis involves problems with veins in the leg and is evident by changes in the lower legs.</span>
Answer:
Flatworms,crabs and starfish are classified as Invertebrates.This is due to the fact that they neither possess nor develop a vertebral column, derived from the notochord.
Chromosomes are the part of the DNA that determine traits
The expressed (coding) regions of eukaryotic genes are called EXONS.