Regrown variegated seedlings

[850FL]

I have a seedling Hass that came up quite variegated, put out a set of variegated leaves, then died back to a stump, then came back with a couple sets of normal leaves EXCEPT the veins are white and this is the only indication it's even variegated. I don't get it. It's not grafted so why is it doing this?
I believe I read this happened to another plant somewhere as well

[sc4001992]

Do you have a photo of the variegated plant before it died back?

I had a red avocado seedling plant that came up variegated (most leaves and stem) but it eventually died completely after 1 yr.

[Jaboticaba45]

Some trees start out variegated, but lose it after some time. Happened to the variegated mango and lychee I had come up.

[cassowary]

Strange change of the leaf characteristics, let us know how it goes when it's attain size again.
I had a white citrus reticulata once but it died.

[850FL]

I would like to think that in this avocado the variegation is more likely a random mutation and not inherited? Since it is at least half Hass and probably the other half Hass or Fuerte (common pollinator) neither of which are variegated.. but maybe something else pollinated it.. or even the pollinator had recessive variegation genes that weren't obvious.
Variegation must be inherited in some cases like centennial kumquat.
Or could it have inherited some kinds of factors in genes that  would allow  a mutation and how could it even grow out of it? By changing its own dna?

[cassowary]

I don't know but maybe studying albinism could give some clues.
https://pubmed.ncbi.nlm.nih.gov/32544284/
https://study.com/learn/lesson/albino-plants-characteristics-causes-can-plants-be-albino.html

Also, short wave high energy radiation could probobly affect the DNA molecule, such as x-ray and gamma and maybe UV.

And also why do some avocado tree's have new growth that is very red?