Epistasis describes how gene interactions can affect phenotypes ... In this cross, whenever a dominant allele is present at either locus, the biochemical conversion occurs, and a colored kernel ...

DASH probes of lengths 13, 15, 19, and 25 nucleotides were designed for one allele of the PSEN2 gene, centered on the variant base in the sequence 5´-GTCAGATTAGGG (C)GGGGAGAAGAGC-3´. An ...

The height of pea plants is controlled by a single gene which has two alleles: tall and short. The tall allele is dominant and is shown as T. The small allele is recessive and is shown as t.