Scientists may have found a recombinant variant of COVID-19 in the wild, and its mixed DNA could be essential to the coronavirus life cycle.

A complementation test (or cis-trans test) is used to determine whether two recessive mutations causing the same phenotype occur in the same gene or in different genes. In the trans configuration, if the mutations are on different genes,...

A three-point linkage cross helps determine gene order and distances between three linked genes using observed recombination frequencies. The process involves identifying parental types (most frequent), double crossovers (DCO) (least...