A researcher used CRISPR-Cas9 system and observed a different type of mutation in two alleles of a target gene in a T0 transgenic plant. These mutations are designated as follows:
Allele 1: addition of a nucleotide
Allele 2: deletion of a nucleotide
The observed mutations can be classified as
1
monoallelic mutations.
2
biallelic heterozygous mutations.
3
biallelic homozygous mutations.
4
chimeric mutations.