Mendelian Genetics - Dihybrid Cross

In this activity, students investigate how two independent traits—fruit color and skin texture—are inherited using a dihybrid cross. They begin by selecting two homozygous parent plants, one producing orange, bumpy fruit and the other producing purple, smooth fruit. By crossing these plants, students determine which traits are dominant and use Punnett squares to predict the genotypic and phenotypic ratios of the offspring. They then conduct an F₂ cross, analyzing how the principles of segregation and independent assortment influence trait inheritance. The activity concludes with students identifying a rare double-recessive offspring, reinforcing key Mendelian laws and genetic variation in populations.

Previous

Cellular Respiration - Glycolysis

Next

Mendelian Genetics - Discovery