Populate items in data validation based on two option buttons for two columns

Hi
I want populating items in data validation in column G based on select one of the option buttons .
if I select optionbutton1 , then should populate list column J in column G , if I select optionbutton2 , then should populate list column K in column G .
with some notices:
1- I don't want any duplicates names in data validation for column G when populate items .
2- I don't want any empty in in data validation for column G when populate items .
3- if I add new names for two lists in columns J,K , then should populate items in data validation for column G automatically .
I hope some body help
thanks in advance .

@torachan
perfect !
is there way to update the data validation automatically when one of the option button is selected instead of selecting and move from option button to another to see the updating .please ?

@kvsrinivasamurthy
thank you ,but I don't want duplicates in data validation .

@kvsrinivasamurthy
perfect !
I search for way to update data validation when enter new items in any list without I have to move from option to another .
I mean if the optionbutton1 is selected and add new items in list1 for column K , then automatically add new item in data validation instead of select optionbutton2 and return to select optionbutton1 to see updating in data validation .
thanks

@kvsrinivasamurthy
you seem to missed some parts of the codes to put inside the file.
excellent !
this is exactly what I want it .
thanks so much .

Which part is missing?

Private Sub Worksheet_Change(ByVal Target As Range)

It is available in Sheet1 worksheet event.

just optionbutton1,2 are existed in in Sheet1 worksheet event.
if you don't post the whole codes , then I say you the code doesn't still work as I want.
just see the last attached and you will find out the missed code.
others readers will be confused for them when download your file without contains the whole codes as you posted in last attachment.