Here are the definitions for the terms in genetics: i) Lethal gene: A lethal gene is a gene whose expression results in the death of the organism, often at an early stage of development. ii) Epistasis: Epistasis is a phenomenon where the expression of one gene (the epistatic gene) masks or modifies the effect of another gene (the hypostatic gene) at a different locus. iii) Incomplete dominance: Incomplete dominance is a form of inheritance in which one allele is not completely dominant over the other, resulting in a heterozygous phenotype that is an intermediate blend of the two homozygous phenotypes. iv) Linkage: Linkage refers to the tendency of genes or alleles that are located close together on the same chromosome to be inherited together during meiosis, rather than assorting independently. Send me the next one 📸