Why does DNA spontaneously mutate? Quantum physics might explain.

Source:

https://www.livescience.com/quantum-physics-dna-mutations.html

Sample Conventions of Internet Web abbreviation&acronym's creation and more...

Sample Conventions of Internet Web abbreviation&acronym's creation and more... 

Sources:

https://en.m.wikipedia.org/wiki/Mr.#:~:text=Mister%2C%20usually%20written%20in%20its,from%20earlier%20forms%20of%20mistress

https://en.m.wikipedia.org/wiki/Ms. 

https://en.m.wikipedia.org/wiki/United_States

Sample Conventions of Internet Web acronym's creation and more:

W3 = W*W*W = W^3 = WWW

A11y = A(11letters)y = Accessibility

I18n = Internationalization

Mr = British... = M(deleted)r = Mister

Mr. = American... = Mister

Ms = British... = Miss or Mrs

Ms. = American... = Ms

Dr. = Doctorus

dr. = drive

vs. = versus 

vs = versus

v. = versus

Initials:

USA = US = U.S.A. = U.S.

"Mister, usually written in its abbreviated form Mr. (US) or Mr (UK), is a commonly used English honorific for men under the rank of knighthood. The title 'Mr' derived from earlier forms of master, as the equivalent female titles Mrs, Miss, and Ms all derived from earlier forms of mistress. "

The most important question:

does every American abbreviation use a period "." at the end? 

In British English it depends on the last letter of the word! 

The same like in Polish (dr, mgr inż., lek. med., itp., itd., pon., sob., WF, WC, Sp. z o.o.) with exceptions (S.A. instead of SA) - Polish American abbreviation or initials?    :-) 

And what type is the word of the symbol of "first and last names" like below? 

Fanka Biedronki = FBD

Versus and Its Abbreviations v. vs. vs v

Sources:

https://www.dailywritingtips.com/versus-and-its-abbreviations/

https://english.stackexchange.com/questions/5392/how-should-i-abbreviate-versus

https://www.btb.termiumplus.gc.ca/tpv2guides/guides/wrtps/index-eng.html?lang=eng&lettr=indx_catlog_v&page=9GZGCGS05v7g.html#:~:text=Versus%2C%20meaning%20%E2%80%9Cagainst%2C%20opposed,in%20legal%20documents. 

<<There are 4 types of abbreviations I know for "versus":

• v
• v.
• vs
• vs.

I generally use the last one in the list, but I want to stick to one and use only that one. Which one is more proper (or more prevalent), and why?

Extra question: Which one should be preferred in scientific papers?>>

<<Versus, meaning "against, opposed to" or "in contrast to," is often abbreviated to vs. in sports coverage and to v. in legal documents.>>

<<The word comes from the Latin verb vertere: "to turn, turn back, be turned, translate." Versus is the past participle of vertare. Its meanings in English include "against" and "as opposed or compared to">>

<<In legal contexts, the abbreviation "v." is used. Elsewhere, the most common is "vs.". In formal contexts (e.g. scientific papers), it is probably best to have the period at the end of the abbreviation.>>

Abbreviations, Acronyms, and Initialises. Differences...

https://wwwnc.cdc.gov/eid/page/abbreviations-acronyms-initialisms#:~:text=An%20abbreviation%20is%20a%20truncated,DNA%2C%20RT%2DPCR).

PL: Skrót, akronim, inicjały... 

"An abbreviation is a truncated word; 

an acronym is made up of parts of the phrase it stands for and is pronounced as a word (ELISA, AIDS, GABA); 

an initialism is an acronym that is pronounced as individual letters (DNA, RT-PCR)."