Yes. all life on the earth would come to an end.
Reason- oxygen is important for survival on earth. so plants are the pnes providing oxygen and if they are not present then we will all die.
A point mutation or substitution is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a sequence of DNA or RNA. Point mutations have a variety of effects on the downstream protein product—consequences that are moderately predictable based upon the specifics of the mutation.
Hope this helps
Speed
:) i hope i was helpful
1.Aa
2.aa
3. Aa
4.aa
50% Aa and 50%aa