DNA fingerprinting is where DNA is used to create a profile for someone often in crimes. The STR or Short Tandem Repeats are used for this. STRs are non-coding sections of DNA which repeat themselves for example CACACACACACACACACACA the location of this STR and the length of the STR (how many times it repeats) are used to identify a specific person
They are different in structure as one serves in an open system (lymphatic system) while the other serves is closed system (circulatory system).
Hope this helps!
*This question is common, so this answer I use a lot. I copied my own work.*
<span>the high expense; electron microscopes are costly</span>
They are like that because they can't always be faulty and may have at least some spark of truth to this theory also as stated earlier a theory in scientific terms is just an observation so it can't really be turned down hence theory.
Answer :
Option A is your answer
