Test cross ratioThe test cross-ratio of a monohybrid cross is 1:1:1:1.The test cross-ratio of a dihybrid cross is 1:1. SignificanceMonohybrid crosses are performed to determine the dominant allele of a character.Dihybrid crosses are performed to study offspring assortment. ...
The results of the test cross can indicate the genotype of theparent with the dominant phenotype.Sample Problem: In pea plants, green pods (G) are dominant to yellow pods (g).A plant breeder would like know if the plants that produce green pods are pure bred for that trait. To ...
1 phenotypic ratio of amonohybrid cross(one trait present in two forms, or alleles), although the terms ‘phenotype’ (an individual's appearance) and ‘genotype’ (the gene variants present) were not yet in use. This phenomenon would become known as Mendel's first law, or the law of ...
Problem2:Mendel'sFirstLaw Aphenotypicratioof3:1intheoffspringofamatingoftwoorganismsheterozygousforasingletraitisexpectedwhen: A.theallelessegregateduringmeiosis.(http:\/\/.biology.arizona.edu\/mendelian_genetics\/problem_sets\/monohybrid_cross\/02C.html...