APPENDIX TABLE A2.
The Composite Genetic Effects, Their Abbreviation, and a Brief Definition That Were Compared Using an Information Theory Approach with the Analysis of Line Cross Data
| Name | Abbreviation | Definition |
|---|---|---|
| Autosomal additive | Aa | When the combined effects of alleles at different loci are equal to the sum of their individual effects. Autosomal genes are located on one of the numbered, or non-sex, chromosomes.A3,A4 |
| Autosomal dominance | Ad | In dominant genetic models, a single allele copy of the mutation is enough to cause expression of the trait.A5 |
| Cytotype additive | Ca | Genetic variation in cytoplasmic genomes (i.e., the combined mitochondrial and plastid genomes) can influence trait expression.A3,A6 |
| Maternal effect additive | Mea | Maternal effects arise when the genetic and environmental characteristics of a mother influence the phenotype of her offspring, beyond the direct inheritance of alleles. In this case, transgenerational expression of induced genes with additive genetic effects.A3,A7 |
| Maternal effect dominance | Med | In this case, transgenerational expression of induced genes with dominance genetic effects.A3 |
| Autosomal additive by additive epistasis | AaAa | The single locus additive value for a given locus (e.g., A) changes depending on the genotype at a second locus (e.g., B) and vice versa. When an alternate allele at locus A is present, it will result in smaller phenotype values when the B-locus is homozygous for the primary genotype and will result in large phenotype values when the B-locus is homozygous for the alternate genotype.A8 |
| Autosomal dominance by dominance epistasis | AdAd | The single locus dominance genotype value for a given locus (e.g., A) changes depending on the genotype at a second locus (e.g., B) and vice versa. The single locus dominance genotypic value is underdominant when the alternate locus genotype is homozygous and overdominant when the alternate locus genotype is heterozygous.A8 |
For quantitative traits such as cannabinoid concentrations, their expression may be determined by genetic factors, environmental factors, and parental environment. Thus, when assessing the inheritance of chemotypes, a diversity of genetic models must be considered.A3